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  1. By: Engel, Michael S. - Gonzalez, Victor H. - Smith-Pardo, Allan H.
    Holding Institution: American Museum of Natural History Library
    Subjects: America  Argentina  Bees  Calliopsini  Chile  Cordillera Occidental (Peru)  Peru  Phylogeny  Spinoliella  Xeranthrena  Xeranthrena imponticula