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Books by Y. Hagen

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1 books found
The Food, Population Fluctuations and Ecology of the Long-Eared Owl 9Asio Otus (L.)) in Norway, 1965, Papers of the Norwegian State Game Research Institute, 2. serie, nr. 23 : 43 pages with illustrations.
The Food, Population Fluctuations and Ecology of the Long-E…
By: Y. Hagen
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