TY  - BOOK
TI  - IIASA reports. volume 2, number 2, october-december 1980..
CY  - Laxenburg, Austria : International Institute for Applied Systems Analysis
N1  - "Population, resources, and growth".Contenido: Comparative dynamics of three demographic models- of urbanization / Jacques Ledent. -- Determinants of rural--to-urban migration in Kenya / H. Rempel
ER  -