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  1. By: Engel, Michael S. - Gonzalez, Victor H.
    Type: Article
    In: ZooKeys
    Volume: 101
    Date: 2011
    Page Range: 51-80
    Publication Info: Sofia, Bulgaria Pensoft Publishers
    Subjects: Anthophila  Apoidea  Chalicodoma  Megachilinae  Megachilini  Phylogeny  Southeast Asia  taxonomy