TY  - BOOK
AU  - Spengler,Joseph John,1902-
AU  - Duncan,Otis Dudley,joint ed
TI  - Population theory and policy: selected reading 
PY  - 1956///
CY  - Glencoe, Ill.
PB  - Free Press
KW  - Population
N1  - Bibliography: p. 510-519
ER  -