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  1. African reed warblers in northern Nigeria; morphometrics and the taxonomic debate
    By: Wilkinson, R - Aidley, D J
    Type: Article
    In: Bulletin of The British Ornithologists' Club
    Volume: 103
    Date: 1983
    Page Range: 135--138
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  2. Nigeria a new wintering area for the little crake Porzana parva
    By: Wilkinson, R - Beecroft, R - Aidley, D J
    Type: Article
    In: Bulletin of The British Ornithologists' Club
    Volume: 102
    Date: 1982
    Page Range: 139--140
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