Não informado. (1964). IBP news. International Council of Scientific Unions, Special Committee for the International Biological Programme.
Chicago-viite (17. p.)Não informado. IBP News. London: International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
MLA-viite (8. p.)Não informado. IBP News. International Council of Scientific Unions, Special Committee for the International Biological Programme, 1964.
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