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  1. Flora Costaricensis: Family #39 Orchidaceae: Tribe Maxillarieae: Subtribes Maxillariinae and Oncidiinae
    By: Atwood, John T - De Retana, Dora Emilia Mora
    Type: Article
    In: Fieldiana Botany
    Volume: 40
    Date: 1999-04-30
    Page Range: 1--182
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  2. A Floristic Study of Volcan Mombacho Department of Granada, Nicaragua
    By: Atwood, John T
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 71
    Date: 1984
    Page Range: 191--209
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