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A monograph of the Bucerotid or family of the hornbills Plate LV . Keulemans litt Hantart rm TOCKUS GINGALENSIS Plate LV Illustration biodiversitylibrary org title Elliot Daniel Giraud NameFound Tockus gingalensis NameConfirmed Tockus gingalensis NameBankID Biodiversity Heritage Library monograph of the Bucerotid or