• publisher: Washington : G.P.O.
  • creator: United States Entomological Commission
  • contributor: United States Entomological Commission.
  • Keyword: Insect pests Periodicals. Beneficial insects Periodicals.
  • years: 1880-
  • pages: 5 v. :
  • notes: Each no. has also a distinctive title.
  • download: pdf file