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2
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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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Tropical pasture science / by P.C. Whiteman ; contrib. by S.A. Waring, E.S. Wallis, R.C. Bruce.
- Oxford University Press,
- 1980.
- New York, NY :