Algebraic Logic
H. Andréka & James Donald Monk & I. Németi
Personality Types: Jung's Model of Typology
Daryl Sharp
A History of Mathematical Notation. Vol II
Florian Cajori
An Introduction to Philosophy
George Stuart Fullerton
Historical readings in developmental psychology
Wayne Dennis
Scientific Philosophy: Origins and Development
Carl G. Hempel
Vienna Circle Institute Yearbook (1)