TY  - BOOK
AU  - Keyfitz,Nathan.
TI  - Applied Mathematical Demography
SN  - 0-471-47350-2
U1  - 304.602 KEY 
PY  - 1977///
CY  - New York
PB  - John Wiley & Sons
KW  - Mathematics, Projection and Forecasting,The LIfe Table
ER  -