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1by Saurola, Pertti (1938– )“... International Conference on the Study and Conservation of the Migratory Birds of the Baltic Basin Bibliogr. p. 7...”
Published 1980
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2by Zając, Ryszard Zygmunt (1936– )“... on the Study and Conservation of the Migratory Birds of the Baltic Basin ISBN tomu: 83-01-04891-3 Bibliogr. p...”
Published 1980
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3by Mihelsons, Harijs“... International Conference on the Study and Conservation of the Migratory Birds of the Baltic Basin Bibliogr. p...”
Published 1980
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