TY  - BOOK
AU  - Brown,Lester Russell
TI  - World population trends: signs of hope, signs of stress 
T2  - Worldwatch paper
SN  - 0916468070
AV  - HB871 B76
PY  - 1976///
CY  - [Washington]
PB  - Worldwatch Institute
KW  - Población
ER  -