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World population trends and policies : 1979 monitoring report / [United Nations, Department of economic and social affairs, Population division].
- United Nations,
- 1980.
- New York, NY :
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Ninth United Nations regional cartographic conference for Asia and the Pacific, Wellington, New Zealand, 11-22 February 1980 : vol. I : report of the conference / Department of technical co-operation for development.
- 850.1
- United Nations,
- 1980.
- New York :
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Major technology issues in the energy sector of developing countries : report / by the UNCTAD secretariat.
- United Nations,
- 1980.
- New York :