TY  - BOOK
AU  - Whelpton, Pascal Kidder,
ED  - Population Association of America.
TI  - Needed population research,
AV  - HB851 .W47
U1  - 312.0973 W567n 1938
PY  - 1938///
CY  - Lancaster, Pa.
PB  - The Science Press Printing Company
KW  - Población
KW  - Estados Unidos -
ER  -