TY  - BOOK
AU  - Worsley,Peter
TI  - The Three Worlds:  culture and world development 
U1  - 304.2 
PY  - 1984///
CY  - Chicago
PB  - The University of Chicago Press
KW  - Social Behaviour
KW  - Factors affecting social behaviour
N1  - Includes bibliography and index
ER  -