A contribution to the petrology of the Coldwell alkaline complex, Northern Ontario
Currie, K.L.
Hull, Québec. 1980. 43 S.. Geological Survey of Canada. Geological Survey Bulletin ; 287Â.
ISBN 0-660-10510-1

¬A¬ contribution to the phonology of Desi-Irish to serve as an introduction to the metrical system of Munster poetry
Henebry, Richard
1898. VI, 77 S..

A contribution to the photochemistry of phosgene ...
Manninen, Thomas Herman,
New York City, . 1938.. 31, [1] p. incl. tables, diagrs..

¬A¬ contribution to the physical anthropology and population genetics of Sweden: variations of the ABO, Rh, MN and P blood groups
Beckman, Lars
Lund. Berling. 1959. 189 S..

¬A¬ contribution to the population ecology of Nyctalus noctula: (Mammalia: Chiroptera)
Gaisler, JiÏri ; Hanak, Vladimir ; Dungel, Jan
1 Aufl.. Praha. Academia. 1979. 38 S.. PÏrirodovÏedné prace UstavÊu ÏCeskoslovenské Akademie Ved v BrnÏe ; N.S., 13,1.

A contribution to the population ecology of Nyctalus noctula (Mammalia: Chiroptera)
Gaisler, Jiérí ; Hanák, Vladimír ; Dungel, Jan
Praha. Acad.. 1979. 38 S.. Pérírodovéedné práce Ústavu éCeskoslovenské Akademie Véed v Brné ; N.S., T. 13, Fasc. 1.

A contribution to the population geography of the Yemen Arab republic: the major findings of the population and housing census of February 1975 and of supplementary demographic and cartographic surveys, carried out in the districts of Turbat ash Shama'itayn, Jabal lyal Yazid and al Luhayyah
Steffen, Hans
Wetzikon, . 1979. xix, 179, 131 s..

A contribution to the positive theory of direct taxation
Canegrati, Emanuele
2007. Online-Ressource, 55 S., Text. Working paper ; 469.

A contribution to the Powder Intensity Project of the International Union of Crystallography
Paakkari, Timo ; Suortti, Pekka ; INKINEN, OSMO
Helsinki. Suomal. Tiedeakat.. 1970. 28 S. : graph. Darst.. Annales Academiae Scientiarum Fennicae : Ser. A : VI ; 345.

A contribution to the problem of methanol utilization by fungi.
Karczewska, Helena
Stockholm. IVL,. 1979. 9 bl..

¬A contribution ¬to the pure theory of taxation
Guesnerie, Roger
1. paperback ed.. Cambridge ¬[u.a.]¬. Cambridge Univ. Press. 1998. XV, 299 S. : graph. Darst.. Econometric Society monographs ; 25.
ISBN 0-521-23689-4

<<A>> contribution to the question of linear dependence in linear integral equations
Rouse, Louis Joseph
Sendai, Japan . 1919. 33 S..

¬A¬ contribution to the question of stress-corrosion cracking of austenitic stainless steel cladding in nuclear power plants
Kupka, I.
1977. Information centre, Nuclear Power Construction Department, Skoda Works ; 212.

¬A¬ contribution to the question of the mouth parts of the Copepoda
Lang, Karl
Stockholm. Almqvist & Wiksell [u.a.]. 1946. 24 S.. Arkiv för zoologi ; 38,A,5.

¬A¬ contribution to the question of the transit of the ovum from ovary to uterus in rabbits
Westman, Axel
Helsingfors. Mercator. 1926. 104 S.. Acta obstetricia et gynecologica Scandinavica ; Vol. 5, Fasc. 3/4, Suppl..

A contribution to the revision project of the sporadic groups: Lyons' simple group Ly
Gollan, Holger W.
Essen. Fachbereich Mathematik der Univ., GH,. 1998.. II, 161 S. ;.

A contribution to the science and art of management: My years with General Motors,
Johnson, Howard Wesley.
[Boston, Mass.? . Technology Review,. 1964]. 4 p..

¬A¬ Contribution to the settlement analysis of foundations on clay
Skempton, A W
yyy.

A contribution to the sociology of religion (1905)
Simmel, Georg
1955.

¬A¬ contribution to the strategy for the identification and control of occupational carcinogens
Brussels. European Chemical Industry Ecology and Tocixology Centre. 1980. 21 S.. Monograph / ECETOC ; 2.

¬A¬ contribution to the structural history of the Vidal-Parker region, California and Arizona
Carr, Wilfred J.
Washington, DC. United States Gov. Print. Office. 1991. IV, 40 S.. Professional paper / US Geological Survey ; 1430.

¬A¬ contribution to the study of Anglo-Norman influence on English place-names
Zachrisson, Robert E.
Lund. Ohlsson. 1909. XV, 171 S.. Lunds Universitet: Lunds Universitets årsskrift / 1 / Ny följd ; 4,3.

A Contribution to the Study of Anglo-Norman Influence on English Place-Names
Zachrisson
Lund . 1909. 1 bd..

¬A¬ contribution to the study of a viscous fluid motion between two rotating cones: with application to the rheometry of greases
Balan, Corneliu
1991. [6], 138 S. : Ill., graph. Darst..

¬A¬ Contribution to the study of eccene the in Western Pakistan and Western India ...
Eames, Frank Evelyn
London [u.a.]. 1952. pp. 1 - 168. Philosophical Transactions of the Royal Society of London : Ser. B ; No 631, Vol. 223.

¬A¬ contribution to the study of fifteenth century English
Kihlbom, Asta

¬A¬ contribution to the study of genetival composition in Old English place-names
Tengstrand, Erik Harald Richard
Uppsala: Almquist & Wiksells. 1940. LXVII, 354 S.. Nomina germanica ; 7.

¬A¬ Contribution to the study of genitival compasition in old English place-names
Tengstrand, Erik
Uppsala. [Lundequist]. 1940. LXVII, 354 S.. Nomina Germanica ; 7.

¬A¬ Contribution to the study of genitival composition in old English place names
Tengstrand, Erik
Uppsala. 1940.

¬A¬ contribution to the study of international comparisons of costs of living
Nachdr. d. 2.Aufl. Genf 1932. New York, NY ¬[u.a.]¬. Garland. 1983. 246 S.. The world economy.
ISBN 0-8240-5366-4

¬A¬ Contribution to the study of international comparisons of costs of living: an enquiry into the cost of living of certain groups of workers in Detroit (USA) and 14 European towns
[2. ed.]. Geneva [u.a.]. King in Komm.. 1932. XII, 246 S. ; 8-o. Studies and Reports / International Labour Office ; N, 17.

¬A¬ contribution to the study of Jean Lemaire de Belges: a crit. study of bio-bibliogr. data, including a transcript of various unpubl. works
MUNN, KATHLEEN M.
1936. 215 S..

¬A¬ contribution to the study of Jean Lemaire de Belges: a critical study of bio-bibliographical data, including a transcript of various unpubl. works
Munn, Kathleen M.
réimpr. de l'éd. de New York, 1936. Genève. Slatkine Repr.. 1975. VII, 215 S..

¬A¬ contribution to the study of joint ventures in Asia Pacific
Lasserre, Philippe
Fontainebleau. INSEAD. 1997. 25 S.. Working papers / INSEAD ; 97,14.

A contribution to the study of New Zealand diatoms
Cassie, Vivienne
Berlin [u.a.]. Cramer in der Gebr. Borntraeger Verlagsbuchh.. 1989. 266 S.. Bibliotheca Diatomologica ; 17.
ISBN 3-443-57008-9

¬A¬ Contribution to the study of portal hypertension
Hunt, Alan Henderson
Edinburgh [u.a.]. Livingstone. 1958. XI, 230 S. ; 8-o. Jacksonian Prize Essay / Royal Coll. of Surgeons ; 1956.

A contribution to the study of the Aztec language: a detailed linguistic and literary treatment of the 2nd poem found in D. G. Brinton's comp. "Ancient Nahuatl poetry"
Whorf, Benjamin Lee
Chicago, Ill.. Univ. of Chicago Libr.. 1956. II, 43 S.. Microfilm Collection of manuscripts on Middle American cultural anthropology ; Nr. 42.

A contribution to the study of the conversion of adjectives into nounsin English
Bergener
Lund . 1928. XVI, 219 s..

A contribution to the study of the descriptive technique of Jean-Jacques Rousseau
Buchner, Margaret Louise
S.l.. Johnson Reprint Corp. 1973. 184 p..
ISBN 0-384-06185-0

¬A¬ Contribution to the Study of the Descriptive technique of Jean-Jaques Rousseau
Buchner, Margaret L.
New York [u.a.]. Johnson. 1937. 184 S.. Johns Hopkins Studies in Romance literatures and languages ; 30.

¬A¬ contribution to the study of the effect of the venom of Crotalus adamanteus upon the blood of man and animals
Mitchell, Silas Weir
[Washington]. [Gov. Print. Off.]. [1889]. 14 S.. Memoirs of the National Academy of Sciences ; 8,2.

¬A¬ Contribution to the study of the efficiency in a photon excitated p-n junction in silicon
Stubb, Tor
1958.

¬A¬ Contribution to the study of the Eocene in Western Pakistan and Western India ...
Eames, Frank Evelyn
London [u.a.]. 1951. pp. 311 - 428. Philosophical Transactions of the Royal Society of London : Ser. B ; No 627, Vol. 235.

A contribution to the study of the function of the saccular otolith of the frog
Huddleston, Ora Leonard,
Berkeley. The University press,. 1928.. p. [29]-42.

A contribution to the study of the interrelationships between population activities and integrated rural development (IRD)
Lunan, Murray.
Rome. Food and Agriculture Organization of the United Nations,. 1976.. 62 p. in various pagings ;.

A contribution to the study of the moral practices of certain social groups in ancient Mesopotamia,
Brooks, Beatrice Allard,
Leipzig, . printed by W. Drugulin,. 1921.. 90 p., 2 l..

<<A>> contribution to the study of the relation between color and constitution in the triphenylmethane series
Kyriakidês, Lukas Petru
Easton, Pa. . Eschenbach. 1911. 29 S..

A contribution to the study of the relation between vitamin-B and the nutrition of the dog
Cowgill, George Raymond. [from old catalog]
[Baltimore, . 1921]. p. [420]-436. illus., diagrs..

A contribution to the study of the saccular otolith function of the ear of the frog,
Huddleston, Ora Leonard.
[Berkeley] . 1926.. 1 p. l., 21 numb. l..

A Contribution to the study of the sources of the genie du christianisme
Dempsey, Madeleine
Paris. Champion. 1928. 125 S.. Bibliothèque de la revue de littérature comparée ; 49.

A contribution to the study of the sources of the Génie du christianisme
Dempsey, Madeleine
Paris. Champion. 1928. 125 S. : 8". Bibliothèque de la Revue de littérature comparée ; 49.

¬A¬ contribution to the study of the sources of the Génie du Christianisme
Dempsey, Madeleine
Reimpr. de l'éd. de Paris 1928. Genève. Slatkine Repr.. 1975. 125 S.. Revue de littérature comparée / Bibliothèque ; 49..

A contribution to the sulphur isotope geochemistry of the upper continental crust.
Leosson, Markus A.
Karlsruhe. IPG,. 1999..

A contribution to the Swahili maritime terminology
Baldi, Sergio.
Roma. Istituto Italo-Africano,. 1976.. 99 S..

¬A¬ Contribution to the synthesis of compounds related to vitamin A in structure
Karanth, K. Parameshwar
Zürich. Juris-Verl.. 1950. 44 S. ; 8-o.

A contribution to the systematics of Cladosporium: revision of the fungi previously referred to Heterosporium
David, John Charles
Wallingford, Oxon, UK ; New York, NY, USA. CAB International. 1997. viii, 157 p.. Mycological papers ; no. 172.
ISBN 0-85198-940-3

A contribution to the taxonomy of the genus Phanerochaete (Corticiaceae, Aphyllophorales)
Burdsall, Harold H.
Braunschweig. Cramer. 1985. 165 S.. Mycologia memoir ; 10.
ISBN 3-7682-1392-7

<<A>> Contribution to the taxonomy of the Insectivora based on hair character analysis
Weingart, E.L.
New Haven - Conn. . 1974. 11 Microfiches..

A contribution to the taxonomy of the subfamily issinae in America north of Mexico (fulgoridae, homoptera).
Doering, Kathleen
[i.a.]. Univ. of Kansas,. 1940. s. 83-167.

A contribution to the theory and design of self learning contollers
Michalek, Jan
1988. 3 Mikrofiches.

<<A>> contribution to the theory and design of self-learning controllers
Michalek, Jan
Zürich . 1988. 3 Mikrofiches.

A contribution to the theory of bilk queues
Miller, Rupert G.
1959.

A contribution to the theory of chemical affinity.: A paper read at the first annual meeting of the California science association, at Santa Cruz, December 28, 1894.,
Pyburn, George
Sacramento, . D. Johnston & co.,. 1895.. 8p..

A contribution to the theory of correlation and regression in non-random samples
Quensel, Carl-Erik.
Lund. Gleerup,. 1958.. 31 S..

A contribution to the theory of supply at joint cost
Fanno, Marco
Basingstoke, Hampshire [u.a.]: Macmillan [u.a.]. 1999. Classics in the history and development of economics.
ISBN 0-312-21698-X

A contribution to the theory of the living organism,
Agar, Wilfred Eade,
Melbourne, . Melbourne University Press in association with Oxford University Press,. 1943.. 207 p..

A contribution to the theory of the trade cycle
Hicks, John R.
Repr.. Oxford. Clarendon Press. 1959. 201 S..

¬A¬ contribution to the theory of the trade cycle
Hicks, John Richard
Reprinted. London. Oxford Univ. Press. 1967. X, 201 S..

A contribution to the theory of upwelling
Hidaka, Koji,
College Station, Tex.. Texas A & M University, Dept. of Oceanography,. 1953.. ii, 10 leaves, [6] leaves of plates.

A contribution to the thermal stress behaviour of Roller-Compacted-Concrete (RCC) gravity dams
Conrad, Marco
2005. 276 Bl..

¬A¬ contribution to the thermochemistry of organic compounds
Berner, Endre
Oslo. Johansen. 1926. 134 S..

A contribution to the trauma-biomechanics of the cervical spine: pressure phenomena observed under conditions of low speed rear-end collisions
Schmitt, Kai-Uwe
Als Ms. gedr. Düsseldorf. VDI-Verl.. 2001. XII, 86 S.. Fortschritt-Berichte VDI : Reihe 17, Biotechnik/Medizintechnik ; 211.
ISBN 3-18-321117-3

¬A¬ Contribution to the understanding of the oxidation mechanism in mineral oils of low aromatic content
Taat, Willem Johan
1956.

A contribution to the urban transportation debate;: an econometric model of urban residential and travel behavior.
Kain, John F.
[n.p.] . 1962.. 37 \2113..

¬A¬ contribution to the vector and tensor analysis
JankoviÂc, Zlatko
Udine. 1969. 53, 48 S.. International Centre for Mechanical Sciences <Udine>: Courses and lectures. ; 6..

Elias Hassos, Fotografien: DZ-Bank-Kunststipendium 2002/2003 ; [im Rahmen des DZ Bank Kunststipendiums 2002/2003 und der damit verbundenen Ausstellung im Künstlerhaus Bethanien, Berlin vom 11. Juli bis 10. August 2003]
Seibold, Anne ¬[Red.]¬
[Berlin]. [Künstlerhaus Bethanien]. 2003. 79 S..

A contribution to urbanism--the tall building as a multi-dimensional framework for additive growth and change
Nelson, David J.
c1987. 123 p..

A contribution towards a bibliography dealing with crime and cognate subjects
Cumming, John Ghest Sir [Hrsg.]
3. ed. reprinted with corr.. Montclair. Patterson Smith. 1970. 14, 107 S.. Patterson Smith reprint series in criminology, law enforcement, and social problems. Publication ; No. 103.
ISBN 0-87585-103-7

A contribution towards a bibliography of the camel with particular reference to the introduction of camels into the United States and the camel pack trains in the western mining camps.
Lewis, William S. ; Gray, A. A. ; Farquhar, Francis Peloubet,

A contribution towards a more realistic theory of economic growth and development
Myrdal, Gunnar
Stockholm. 1972. 13 S..

A contribution to western Pennsylvania pharmacy
Reif, Edward Clarence, ; Reif, Thelma Carr
[Pittsburgh] . University of Pittsburgh Press,. 1959. 396 p..

A contributive society
Bellerby, John R.
2. ed. with additions. Oxford. Education Services. 1988. XXIII, XVI, 284 S..
ISBN 0-902812-02-5

A control algorithm and vehicle model for stop & go cruise10 Lawrence, Kansas
Eizad, Zille. ; Vlacic, Ljubo.
Rebpublican Journal Steam Printing Establishment,. 1875.. 1 print.

¬A¬ control algorithm for the robot arm manipulator using the extended Kalman filter
Shelmani, Saleh A.
Ann Arbor, Mich.. Univ. Microfilms Internat.. 1990. XIV, 195 S. : graph. Darst..

A control & analysis data acquisition system for a prototype acoustooptically-switched laser ordinance firing system
Papineau, Christopher B.,
c1991.. 127 leaves.

A control analysis of a hybrid motor-brake system for tactile simulations
Russo, Massimo Andrea.
c1988.. [4], 55, [7] leaves.

A control and communication unit of an ultrasonic holographic imaging system
Tervola, Kalervo ; Alasaarela, Esko
Oulu. Oulu Univ., Dept. of Electrical Engineering. 1980. 30 S.. Raportti : T ; 59.
ISBN 951-42-0922-2

A control and data acquisition system for use with a hydrothermal diamond-anvil cell
Haselton, H. T. ; Chou, I-Ming,
Reston, VA. U.S. Dept. of the Interior, U.S. Geological Survey,. 1994. 24 leaves.

<<A>> Control and data processing system for neutron time-of-flight experiments at the Harwell linear accelerator based on a PDP-11/45 mini-computer
Chapman, W.S.
London a.o. . 1977. var.pag..

A control and measurement circuit for the Bayard-Alpert ionization guage
Lucy, Robert Frederick.
[1951]. iii, 52 leaves.

A control architecture for intelligent robots based on graph manipulation for planning, monitoring, execution, intention switching, and fault recovery
Hasemann, Joerg-Michael
Espoo. Technical Research Centre of Finland. 1996. 145 S. : graph. Darst.. VTT publications ; 283.
ISBN 951-38-4941-4

A Control Chart for Variability based on a Sum of Squared Ranks Statistics
Besenfelder, Werner
1995. VI, 161 Bl..

¬A¬ control circuit design methodology based on control blocks
Beadle, Peter ; Bromley, Allan
Sydney. Dept., Univ.. 1986. 14 S.. Technical report. Basser Department of Computer Science. University of Sydney ; 282.

¬A¬ controled study of sensation awareness and verbal disclosure
Scholle, Stephan R.
Ann Arbor, Mich.. University Microfilms International. 1991. 1 Mikrofiche.

¬A¬ controllability test for general first-order representations
Helmke, Uwe ; Rosenthal, Joachim ; Schumacher, Johannes M.
Amsterdam. Stichting Mathematisch Centrum. 1995. 13 S.. Report / Centrum voor Wiskunde en Informatica, Department of Operations Research, Statistics, and System Theory ; BS-R9508.

A controllable, nano-volumetric, transdermal drug delivery device
Angel, Aimee B.
c2002.. 160 leaves.

¬A¬ controlled clinical trail of a diet high in unsaturated fat: in preventing complications of atherosclerosis
Dayton, Seymour
New York, NY. American Heart Assoc.. 1969. 63 S.. American Heart Association monograph ; 25.

¬A¬ controlled clinical trial of a diet high in unsaturated fat: in preventing complications of atherosclerosis
Dayton, Seymour
New York. American Heart Assoc.. 1969. 63 S. : zahlr. graph. Darst.. Monograph / American Heart Association ; 25.

A Controlled clinical trial of a diet high in unsaturated fat in preventing complications of atherosclerosis,
Dayton, Seymour,
New York, . American Heart Association,. 1969.. 63 p..

¬A¬ controlled, correlational study of the psychological functionning of female paternal incest victims
Feltman, Richard I.
Ann Arbor, Mich.. Univ. Microfilms International. 1986. IV, 140 S..

A controlled environment: green house technology
Tiwari, G. N.
Pangbourne. Alpha Science,. 2003.. 543 p..

¬A¬ controlled investigation of the relapse prevention treatment of addictive behaviors with inpatient alcohol abusers
Wehl, Chris K.
1988. IX, 201 S..

A controlled quantum system of individual neutral atoms
Kuhr, Stefan,
Online-Ressource..

A controlled release microchip
Santini, John Thomas,
[1999]. 202 p..

A controlled slip, linearized, induction motor servo controller
Sharp, Gordon Peter.
c1979.. 390 p. (some folded).

¬A¬ controlled trial of short course regimens of chemotherapy in patients receiving ambulatory treatment or undergoing radical surgery for tuberculosis of the spine: an Indian Council of Medical Research/British Medical Research Council working party study in Madras, South India
London. MRC Cardiothoracic Epidemiology Group [u.a.]. 1989. 21 S.. The Indian journal of tuberculosis ; 36,2, Suppl..

A controlled trial of the effect of a prepaid group practice on the utilization of medical services
Manning, Willard G.
Santa Monica, CA. 1985. XI, 33 S.. Rand : R ; 3029.
ISBN 0-8330-0679-7

¬A¬ controlled trial of the effect of linolenic acid on incidence of coronary heart disease: the Norwegian vegetable oil experiment of 1965-66
Natvig, Haakon
Oslo. Universitetsforl.. 1968. 20 S.. ¬The¬ Scandinavian journal of clinical & laboratory investigation : Supplement ; 105.

A controller and observer for active suspensions with preview
Huisman, Rudolf Geert Maria
1994. XI, 103 S..
ISBN 90-386-0274-X

A controller design for a satellite-based fine-pointing mirror
Leigh, Stanley Earl.
c1987.. 70 leaves.

¬A¬ controlles field experiment comparing management by objectives to existing practices in two organizations
Muczyk, Jan Piotr
[S.l.]. 1972. [262 S.].

A control model of skeletal muscle and its application to a time-optimal biomotion
Hatze, Herbert
1975.

¬A¬ control network of Triton
Davies, Merton E. ; Rogers, Patricia G. ; Colvin, Tim R.
Santa Monica, Calif.. Rand. 1991. [4] S. : Ill..

¬A¬ control of two-dimensional magnetic interpretation by three-dimensional model body anomalies
Lehmann, Hans-Jürgen
[Hannover]. Prakla-Seismos. [1970 ?]. S. 133 - 155.
geh.

¬A¬ control policy for a priority queue with removable server
Tijms, H.
1973. 8 S.. Reports ; BW 29/73.

¬A¬ control problem in a manifold with nonsmooth boundary
Boel, R. ; Kohlmann, Michael
Als Ms. vervielf.. Bonn. Univ.. 1982. [12] Bl.. Preprint / Sonderforschungsbereich <72>, Approximation und Optimierung ; 533.

¬A¬ control reduced primal interior point method for PDE constrained optimization
Weiser, Martin ; Gänzler, Tobias ; Schiela, Anton
Berlin-Dahlem. ZIB. 2004. 17 S.. ZIB-Report ; 2004,38.

A control remoto y otros rollos
Benitez, Jesús Luis
[México, D.F.]. Cofradía de Lectores "La Tinta Indeleble". 2000. 112 S.. Los libros de "La Tinta Indeleble".
ISBN 968-505430-4

¬A¬ control system approach to consumer behavior
Sethna, Beheruz N.
[Mikrofiche-Ausg.]. 1976. 210 S..

A control system design approach for flexible spacecraft
Silverberg, Larry M.
Hampton, Va. D.C.. National Aeronautics and Space Administration, Langley Research Center ;. 1985]. 1 v..

A control system for automatic guided vehicles
Freund, E. ; Mayr, R.
p. 147-158.

<<A>> Control system for clocks where mutual synchronization being the main mode of operation
Mitwally, E.
Stockholm . 1974. 60 l..

A control system for hydrostatic transmission for passenger vehicles,
LeBar, Philip A.
1969.. 102 leaves.

¬A¬ control systems approach to macroeconomic theory and policy in an open economy
Nyberg, Lars ; Viotti, Staffan
1975. Getr. Zählung : graph. Darst..

A control systems study of quadruped locomotion
Klint, Richard af
Stockholm, . 2005. 45 s..

¬A¬ control theoretic model of automobile demand and gasoline consumption
Penerali, Robert B.
1982. VII, 335 S. : graph. Darst..

A control theory approach to analysis of economic policy for a developing country
Yeboah, Dickson A.
Bern u.a.. Lang. 1987. 265 S.. Europäische Hochschulschriften : Reihe 5, Volks- und Betriebswirtschaft ; 828.
ISBN 3-261-03733-4

A control theory of gender difference in crime and delinquency
Costello, Barbara J. ; Mederer, Helen J.