The Concept and the role of the model in mathematics and natural and social sciences proceedings of the colloquium sponsored by the Division of Philosophy of Sciences of the International Union of History and Philosophy of Sciences organized at Utrecht, January 1960

Dordrecht | New York D. Reidel Pub. Co. | Gordon and Breach 1961 .
194 p. , English, French or German. 23 cm..

Mathematics observed.

By Freudenthal, Hans.
New York McGraw-Hill 1967 .
256 p. 20 cm..