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  1. ALTERNATIVES FOR BIOLOGICAL RESOURCES IN AFRICA
    By: Ayensu, E S
    Type: Article
    In: Journal of The Washington Academy of Sciences
    Volume: 66
    Date: 1976
    Page Range: 197--205
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  2. Studies On Pollen Morphology In The Velloziaceae
    By: Ayensu, E S
    Type: Article
    In: Proceedings of The Biological Society of Washington
    Volume: 85
    Date: 1972
    Page Range: 469--480
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