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  1. By: Berlepsch, Sittich Hans,‏ ‎ Freiherr von,
    Publication info: Naumberg a/S, G. Pätz, 1892
    Holding Institution: Smithsonian Libraries and Archives
  1. By: Berlepsch, Sittich Hans,‏ ‎ Freiherr von,
    Type: Article
    In: Journal für Ornithologie
    Volume: 70
    Date: 1922
    Page Range: 324--361
    Publication Info: Berlin, Friedländer,