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  1. The nest biology of the bee Andrena (Ptilandrena) erigeniae Robertson (Hymenoptera: Andrenidae) / Lloyd R. Davis, Jr., Wallace E. LaBerge.
    By: Davis, Lloyd R. - LaBerge, Wallace E.
    Publication info: Urbana :Illinois Natural History Survey,1975.
    Contributed by: University of Illinois Urbana Champaign
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  2. The nest biology of the bees : Andrena (Melandrena) regularis Malloch and Andrena (Melandrena) carlini Cockerell (Hymenoptera: Andrenidae) / Martha Northam Schrader, Wallace E. LaBerge.
    By: Schrader, Martha Northam. - LaBerge, Wallace E. - Illinois.
    Publication info: Urbana :State of Illinois, Dept. of Registration and Education, Natural History Survey Division,1978.
    Contributed by: University of Illinois Urbana Champaign
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  3. A synopsis of common and economic Illinois ants, with keys to the genera (Hymenoptera, formididae) [by] Herbert H. Ross, George L. Rotramel and Wallace E. Laberge.
    By: Ross, Herbert Holdsworth, - LaBerge, Wallace E. - Rotramel, George L.,
    Publication info: Urbana, Ill.,Natural History Survey Division1971.
    Contributed by: University of Illinois Urbana Champaign
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