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  1. By: Townsend, Charles Orvin,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1918.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Townsend, Charles Orvin,
    Publication info: Washington,Govt. print. off.,1921.
    Holding Institution: Library of Congress
  3. By: Townsend, Charles Orvin,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1921.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Townsend, Charles Orvin,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1915.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Townsend, Charles Orvin,
    Publication info: Washington,1907.
    Holding Institution: Library of Congress
  1. By: Townsend, Charles Orvin,
    Type: Article
    In: Botanical gazette.
    Volume: 27
    Issue: 6
    Date: 1899
    Page Range: 458--466
    Publication Info: Hanover, Ind. :[publisher not identified],1876-1991.