TY  - BOOK
AU  - Smith,T.Lynn
AU  - Zopf Jr,Paul E
TI  - Demography: principles and methods  
U1  - 304.6 19
PY  - 1970///
CY  - Philadelphia
PB  - F.A. Davis Company
KW  - Demography
KW  - Spines
KW  - Population
N1  - Includes bibliograpical references; ph
N2  - Health and Population
ER  -