TY  - BOOK
AU  - Keyfitz,Nathan
AU  - Flieger,Wilhelm
TI  - World population: an analysis of vital data 
SN  - 0226432343
U1  - 304.6  21
PY  - 1968/// [ Impression 1970 ]
CY  - Chicago
PB  - University of Chicago Press
KW  - Population
KW  - Statistics
N1  - Bibliography: p. [667]-671
ER  -