TY  - BOOK
AU  - Smith, David
AU  - Keyfitz, Nalkan.
TI  - Mathematical Demography : Selected Papers
SN  - 3540078991
PY  - 1977///
CY  - Berlin
PB  - Springer - Verlag.
KW  - Demography - Mathematical Models - Addresses, Essays, Lectures
ER  -