TY  - BOOK
AU  - Piaget,Jean
AU  - بياجي، جان
TI  - Main trends in inter-disciplinary research
T2  - Main trends in the social and human sciences (G. Allen and Unwin, London)
SN  - 0-04-301061-X
U1  - 001.42 21E
PY  - 1973///
CY  - London
PB  - G. Allen and Unwin
N1  - Notes bibliogr
ER  -