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  1. By: Harvey, Rodney Beecher, - Wright, R. C. (Robert Claude),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1922
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Rose, Dean H. (Dean Humboldt), - Wright, R. C. (Robert Claude),
    Edition: [Rev. Dec. 1942].
    Publication info: [Washington, U.S. Govt. Print. Off.], 1942
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Rose, Dean H. (Dean Humboldt), - Wright, R. C. (Robert Claude),
    Edition: [Rev. Nov. 1941].
    Publication info: [Washington, U.S. Govt. Print. Off.], 1941
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Rose, Dean H. (Dean Humboldt), - Wright, R. C. (Robert Claude), - Bratley, C. O. (Cyril Oliver),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1944
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Rose, Dean H. (Dean Humboldt), - Wright, R. C. (Robert Claude), - Whiteman, T. M. (Thomas Moore),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1933
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  6. By: Rose, Dean H. (Dean Humboldt), - Wright, R. C. (Robert Claude), - Whiteman, T. M. (Thomas Moore),
    Edition: Rev.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, [1938]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Rose, Dean H. (Dean Humboldt), - Wright, R. C. (Robert Claude), - Whiteman, T. M. (Thomas Moore),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1934
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Rose, Dean H. (Dean Humboldt), - Wright, R. C. (Robert Claude), - Whiteman, T. M. (Thomas Moore),
    Edition: Rev. 1949.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1949
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  9. By: Wright, R. C. (Robert Claude),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1923
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  10. By: Wright, R. C. (Robert Claude),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1937
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  11. By: Wright, R. C. (Robert Claude),
    Publication info: Washington, D.C, Govt. print. off, 1942
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  12. By: Wright, R. C. (Robert Claude), - Harvey, Rodney Beecher,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1921
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  13. By: Wright, R. C. (Robert Claude), - Taylor, George F. (George Frederick),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1921
    Holding Institution: Multiple institutions
  14. By: Wright, R. C. (Robert Claude), - Taylor, George F. (George Frederick),
    Edition: Rev. 1929.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1929
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  15. By: Wright, R. C. (Robert Claude), - Taylor, George F. (George Frederick),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1923
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Wright, R. C. (Robert Claude),
    Type: Article
    In: American journal of botany
    Volume: 7
    Issue: 9
    Date: 1920-11
    Page Range: 368--370
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-