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  1. The spring grain-aphis or "green bug" /
    By: Webster, F. M. (Francis Marion), - Phillips, W. J. (William Jeter),
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Entomology,1912.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    View Book
  2. The spring grain-aphis or "green bug."
    By: Webster, F. M. (Francis Marion), - Phillips, W. J. (William Jeter),
    Publication info: Washington,Govt. print. off.,1912.
    Holding Institution: Library of Congress
    BHL Collections: Library of Congress
    View Book