edited by Philip Whitfield ; American consultant, Edward S. Ayensu

Collier Books 1988 1st Collier Books ed

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James A. Duke, Edward S. Ayensu

Reference Publications 1985 Medicinal plants of the world no. 4

: set , v. 1 , v. 2

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by Edward S. Ayensu ... [et al.] ; a welcome by S. Dillon Ripley ; an introduction by HRH the Prince Philip ; an epilogue by Indira Gandhi ; special photography by Kjell B. Sandved and Edward S. Ayensu

Cambridge University Press 1984

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Edward S. Ayensu

Reference Publications 1981 Medicinal plants of the world

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Edward S. Ayensu and Robert A. DeFilipps ; with the assistance of Sam E. Fowler ... [et al.]

Smithsonian Institution 1978

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Edward S. Ayensu

Reference Publications 1978

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by L.B. Smith and E.S. Ayensu

Crown Agents for Oversea Governments and Administrations 1975 Flora of tropical East Africa

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edited by Betty J. Meggers, Edward S. Ayensu, and W. Donald Duckworth

Smithsonian Institution Press 1973

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by E. S. Ayensu

Clarendon Press 1972 Anatomy of the monocotyledons / edited by C.R. Metcalfe 6

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