TY  - BOOK
AU  - Shryock, Henry S.
AU  - Siegel, Jacob S.
AU  - Stockwell, Edward G.
TI  - The Methods and Materials of Demography
SN  - 0126411506
U1  - 304.6 
PY  - 1976///
CY  - London
PB  - Academic Press
KW  - Factors affecting social behavior
ER  -