Showing 1 - 5 results of 5 for search 'Charles Robertson', query time: 0.01s Refine Results
  1. 1
    Flower Visits of Insects II

    Flower Visits of Insects II by Charles Robertson

    Published 1924-01-01
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  2. 2
    Synopsis of Panurgidæ (Hymenoptera)

    Synopsis of Panurgidæ (Hymenoptera) by Charles Robertson

    Published 1922-01-01
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  3. 3
    Phenology of Inquiline and Nest-Making Bees

    Phenology of Inquiline and Nest-Making Bees by Charles Robertson

    Published 1926-01-01
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  4. 4
    Wing Veins of Bees as Strengthening Elements

    Wing Veins of Bees as Strengthening Elements by Charles Robertson

    Published 1926-01-01
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  5. 5
    Localities of Insects Collected by Charles Robertson

    Localities of Insects Collected by Charles Robertson by Charles Robertson

    Published 1928-01-01
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