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Birds of Kenya and Northern Tanzania
- Classifications: Kenya,
- Readership:General (US: Trade)
- Format: Paperback softback 576 pages, clr plates, maps, L’draw
- Classifications: Kenya,
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Birds of the Horn of Africa : Ethiopia, Eritrea, Djibouti, Somalia and Socotra
- Classifications: East Africa,
- Readership:Professional & Vocational
- Format: Paperback softback 512 pages, 213 colour plates
- Classifications: East Africa,
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Songs of Love and War : The Dark Heart of Bird Behaviour
- Classifications: Animal behaviour,
- Readership:General (US: Trade)
- Format: Hardback 256 pages, Line artwork
- Classifications: Animal behaviour,