TY  - BOOK
AU  - Smith,Robert S
TI  - Population economics: selected essays of Jaseph J spengler 
SN  - 0823302861
AV  - HB871 .S652 1972
U1  - 363.9 
PY  - 1972///
CY  - North carolina
PB  - Duke Universsity press
KW  - Population
KW  - Economics
KW  - Social problems
ER  -