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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: Annals of botany
    Volume: 11
    Date: 1897-12
    Page Range: 509--532
    Publication Info: London, Academic Press [etc.],
  2. By: Townsend, Charles Orvin,
    Type: Article
    In: Annals of botany
    Volume: 12
    Date: 1898-03
    Page Range: 117--117
    Publication Info: London, Academic Press [etc.],
  3. 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