TY  - BOOK
AU  - Keyfitz,N.
AU  - Flieger,W.
TI  - Population: : facts and methods of demography
SN  - 0716709317
AV  - DUCE HB885.K43 
PY  - 1971///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Demography
KW  - Mathematical models
KW  - Population
KW  - Statistics
N1  - includes index and bibliographical references
ER  -