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John A.
McGeoch

Iowa State




Arthur W.
Melton

University of Michigan




John A.
McGeoch

Iowa State




Clark L.
Hull

UW Madison


Kenneth W.
Spence

Iowa University


Benton J.
Underwood

Northwestern




Konrad Z.
Lorenz

MPI Seewiesen




Beatrice
Gardner

University of Nevada at Reno


R. Allen
Gardner

University of Nevada at Reno






Oskar
Heinroth

Berlin Aquarium


Ferdinand
Hochstetter

Universität Wien (Anatomy Tree)


Konrad Z.
Lorenz

MPI Seewiesen




Beatrice
Gardner

University of Nevada at Reno

Patrick
Drumm

Ohio University Lancaster
(Options)

Patrick DrummX