TY  - BOOK
AU  - Pressat,Roland
AU  - Grebenik,E
TI  - A Workbook in Demography
SN  - 0416781608
U1  - 304.6 
PY  - 1974///
CY  - London
PB  - Methuen & Co. Ltd
KW  - Factors affecting social behavior
ER  -