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Max
Black

Cornell




Donald
Davidson

Rockefeller




?








Moritz
Schlick

Universität Wien














Eliakim Hastings
Moore

Chicago (MathTree)


Oswald
Veblen

Princeton (Physics Tree)


Alonzo
Church

UCLA (MathTree)


Nathan
Salmon

UC Santa Barbara

David B.
Hershenov

UC Santa Barbara
(Options)

Adam P
Taylor

North Dakota State University

Robert M.
Kelly

Bakersfield College

David HershenovX