University of Illinois at Urbana-Champaign. Cooperative Extension Service
Illinois Natural History Survey Division
Issue Date
1976
Keyword(s)
Field crops -- Diseases and pests.
Insect pests -- Control.
Insecticides.
Pests -- Control.
Publisher
Urbana, Ill. : University of Illinois at Urbana-Champaign, College of Agriculture, Cooperative Extension Service : in cooperation with Illinois Natural History Survey,
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