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  1. New genera and subgenera of augochlorine bees (Hymenoptera: Halictidae) / by Michael S. Engel, Robert W. Brooks, and Douglas Yanega.
    By: Engel, Michael S. - Brooks, Robert W. - Yanega, Douglas.
    Publication info: Lawrence, Kan. :Natural History Museum, The University of Kansas,1997.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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  2. A new species of the bee genus Eoanthidium with extraordinary male femoral organs from the Arabian Peninsula (Hymenoptera: Megachilidae) / by Michael S. Engel.
    By: Engel, Michael S. - University of Kansas.
    Publication info: Lawrence, Kan. :Natural History Museum, University of Kansas,[2004]
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
    View Book