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Johnson's household book of nature Plate XLVII . GNOO OR HORNED HORSE ELAND KOODOO PLATE XLVI UNGULATA Plate XLVII Illustration biodiversitylibrary org title Craig Hugh ed NameFound Ungulata NameConfirmed Ungulata EOLID NameBankID Biodiversity Heritage Library Johnson's household book of nature Mammals Library of Congress