TY  - BOOK
AU  - Beth,Evert Willem
AU  - Piaget,Jean
AU  - Mays,Wolfe
TI  - Mathematical epistemology and psychology
U1  - 164 B562M 1966 
PY  - 1966///
CY  - London
PB  - D. Reidel Press
KW  - Logic, Symbolic and mathematical
KW  - Psychology--Mathematical models
N1  - Includes Index
ER  -