Possibility and necessity
University of Minnesota Press, c1987
Possible et le nécessaire
Translation of: Le possible et le nécessaire
Jean Piaget ; with E. Ackermann-Valladao ... [et al.] ; translated from the French by Helga Feider
University of Minnesota Press c1987 Possibility and necessity v. 2
Available at 22 libraries
University of Minnesota Press c1987 Possibility and necessity v. 1
Available at 23 libraries