• publisher: Urbana
  • creator: Decker, G. C. (George Clemens), 1898- Illinois. Natural History Survey Division
  • contributor: Illinois. Natural History Survey Division.
  • Keyword: Pesticides.
  • years: 1966.
  • pages: 8 p. :
  • class: QH9
  • notes: At head of title : State of Illinois. Department of Registration and Education, Natural History Survey Division.
  • download: pdf file