00577nab a2200181 a 4500 AR-ReUNN 20260702001655.0 260701s ag |||||||||||||||||eng eng Introduction pp. 1-4 Based on papers presented at a seminar held at Pembroke College, University of Cambridge, august 1987; Population and Development Review, a suplement to volume 14, 1988 Población 331 Recursos Naturales 4443 Ideologia 13223 ART (IIGHI)177809 200512 200512 200512 AR-ReUNN spa AR-ReUNN aacr2