United Nations Environment Programme
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United Nations Educational, Scientific and Cultural Organization
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[Conservation, Science and Society Volume 1: Contributions to the First International Biosphere Reserve Congress, Minsk, Byelorussia/USSR, 26 September - 2 October 1983]
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Conservation, Science and Society Volume 1: Contributions to the First International Biosphere Reserve Congress, Minsk, Byelorussia/USSR, 26 September - 2 October 1983
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