TY  - BOOK
AU  - Piaget, Jean
TI  - Main trends i n psychology
SN  - 41500423
U1  - 130 
PY  - 1970///
CY  - London
PB  - George Allen & Unwin
KW  - Parapsychology
KW  - Psychology
N1  - Includes bibliographical references and index
ER  -