TY  - BOOK
AU  - Spengler,Joseph John
TI  - Population economics; selected essays of Joseph J. Spengler
AV  - HB871 .S652
U1  - 301.32/08 
PY  - 1972///
CY  - Durham, N.C.
PB  - Duke University Press
KW  - Population
KW  - Addresses, essays, lectures
KW  - Local
N1  - 920601; Includes bibliographical references
ER  -