Plato's earlier dialectic.

von Robinson, Richard
Ithaca, N. Y., Cornell University Press, 1941.
Umfang/Format: viii, 1 l., 239 p. 24cm.

Aristotle : fundamentals of the history of his development

von Jaeger, Werner, 1888-1961
Oxford : Oxford University press, 1948.
Umfang/Format: 475 p. ; 23 cm.