by Jean Piaget ; [translated from the French by Malcolm Piercy and D.E. Berlyne]

Littlefield, Adams 1963 The International library of psychology, philosophy, and scientific method no. 222 , A Littlefield, Adams quality paperback

Available at 1 libraries

by Jean Piaget ; [translated from the French by Malcolm Piercy and D. E. Berlyne]

Routledge & Kegan Paul 1950 International library of psychology, philosophy and scientific method

Available at 92 libraries