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The determinants and consequences of population trends : a summary of the findings of studies on the relationships between population changes and economic and social conditions / [prep. by J.J. Spengler...et al.].
- United Nations. Department of social affairs. Population division,
- 1953.
- New York, NY :
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The population of Ruanda-Urundi / [prep. by the Population division ; in collab. with J. Godefroy].
- 863.42
- United Nations. Department of social affairs. Population division,
- 1953.
- New York, NY :