TY  - BOOK
AU  - Spengler, Joseph J
AU  - Smith, Robert S (Comp.)
AU  - Vyver, Frank T de (Comp.)
TI  - Population economics: selected essays of Joseph J Spengler
SN  - 0-8223-0286-1
U1  - 301.3204 21st
PY  - 1972///
CY  - Durham
PB  - Duke University Press
KW  - Population; Population-Economic aspects; Economic policy; Economic history
ER  -