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  1. V.—Contributions from the New Mexico Biological Station. —XIII. On the bees of the family Nomadidæ of Ashmead
    By: Cockerell, T D A - Atkins, Emerson
    Type: Article
    In: Annals And Magazine of Natural History
    Volume: 10
    Series: 7
    Date: 1902
    Page Range: 40--46
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  2. XXXIX.—Contributions from the New Mexico biological station—XII. On some genera of bees
    By: Cockerell, T D A - Atkins, Emerson
    Type: Article
    In: Annals And Magazine of Natural History
    Volume: 9
    Series: 7
    Date: 1902
    Page Range: 230--234
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