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Die Raubvgel Deutschlands und des angrenzenden Mitteleuropas Pl. XV . Taf XV BUTEO DESERTORUM DAU Steppen Bussard Pl XV Illustration biodiversitylibrary org title Riesenthal Oskar von NameFound Buteo desertorum NameConfirmed Buteo desertorum NameBankID Biodiversity Heritage Library Die Raubvgel Deutschlands und des angrenzenden