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By: Beck, Erwin, - Rehder, H. (Helmut), - Schulze, E.-D. (Ernst-Detlef),Type: ArticleIn: Journal of the East Africa Natural History Society and National MuseumVolume: 76Series:Issue:Date: 1987Page Range: 1--12Publication Info: [Nairobi, Kenya], The Society, [1965]-1993Subjects: