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  1. By: Weinzierl, Richard A.
    Publication info: Urbana, Ill, University of Illinois at Urbana-Champaign, College of Agriculture, Cooperative Extension Service, 1989
    Holding Institution: University Library, University of Illinois Urbana Champaign
  2. By: Henn, Tess. - Weinzierl, Richard A. - University of Illinois at Urbana-Champaign. Cooperative Extension Service. - Illinois. Natural History Survey Division
    Publication info: Urbana, Ill, Office of Agricultural Entomology, University of Illinois at Urbana-Champaign, College of Agriculture, Cooperative Extension Service, in cooperation with the Illinois Natural History Survey, [1990]
    Holding Institution: University Library, University of Illinois Urbana Champaign
  3. By: Weinzierl, Richard A. - Illinois. Natural History Survey Division - University of Illinois at Urbana-Champaign. Cooperative Extension Service.
    Publication info: Urbana, Ill, Office of Agricultural Entomology, University of Illinois at Urbana-Champaign, College of Agriculture, Cooperative Extension Service, [1990]
    Holding Institution: University Library, University of Illinois Urbana Champaign