TY  - BOOK
AU  - Spengler, Joshep John
AU  - Duncan, Otis Dudley
TI  - DEMOGRAPHIC ANALYSIS
U1  - 312.082 
PY  - 1956///
CY  - Glencoe
PB  - Free Press
KW  - Population -- Collections
N1  - Bibliography: P. 785-813. Bibliographical Footnotes
ER  -