TY  - BOOK
AU  - Piaget,Jean
AU  - Mays,Wolf
TI  - The principles of genetic epistemology / 
T2  -  , 
SN  - 0710086601
U1  - 576.5 
PY  - 1997///
CY  - London : 
PB  - Routledge Kegan Paul , 
KW  - GENETICS
N1  - NULL
ER  -