World population trends and policies :
World population trends and policies : 1987 monitoring report : special topics : fertility and women's life cycle and socio-economic differentials in mortality /
Department of International, Economic and Social Affairs.
- New York : United Nations, 1988.
- xiv, 411 σ. : πίν. ; 28 εκ.
Πληθυσμός
HB883.5
Πληθυσμός
HB883.5