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    ... with votes, the original sighting record found in the publication Forty Years Notes of a Field Ornithologist...
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    ...Referat wygłoszony na Second Meeting of the European Ornithologists' Union Bibliogr. p. 180-181 P...
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    by Engebretsen, Bery
    Published 1989
    .... This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report...
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