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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Berlepsch, Hans Hermann Carl Ludwig,‏ ‎ Graf von, - Ernst, Peters Th C
    Type: Article
    In: Journal für Ornithologie
    Volume: 40
    Series: 4
    Date: 1892
    Page Range: 61--110
    Publication Info: Berlin, Friedländer,