TY  - BOOK
AU  - Piaget,Jean
TI  - Main trends in inter-disciplinary research
SN  - 004301061X
PY  - 1973///
CY  - London
PB  - Allen & Unwin
KW  - Social sciences
KW  - Research
N1  - 'Originally published as chapter 7 in Main trends of research in the social and human sciences, part 1, Mouton/Unesco, 1970.'; Includes bibliographical references and index
ER  -