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  1. By: Tracy, S. M. (Samuel Mills), - Bergen, Joseph Y. (Joseph Young), - Tracy, S. M. (Samuel Mills),
    Publication info: Boston, Ginn, 1899
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
  2. By: Bergen, Joseph Y. (Joseph Young), - Tracy, S. M. (Samuel Mills),
    Edition: Southern United States ed.
    Publication info: Boston, Ginn & company, 1899
    Holding Institution: Library of Congress
  3. By: Tracy, S. M. (Samuel Mills),
    Publication info: Jefferson City, Tribune Printing Co, 1886
    Holding Institution: Cornell University Library
  4. By: Tracy, S. M. (Samuel Mills), - Tracy, S. M. (Samuel Mills),
    Publication info: Jefferson City, Tribune Print. Co., State Printers and Binders, 1886
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
  5. By: Tracy, S. M. (Samuel Mills),
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  6. By: Tracy, S. M. (Samuel Mills), - United States. Bureau of Plant Industry.
    Publication info: Washington, D.C, United States Department of Agriculture, Bureau of Plant Industry, Forage Crop Investigations, 1912
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. By: Tracy, S. M. (Samuel Mills), - United States. Bureau of Plant Industry.
    Publication info: Washington, D.C, United States Department of Agriculture, Bureau of Plant Industry, Forage-Crop Investigations, [1909?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  8. By: Baker, Carl F. - Earle, F. S. (Franklin Sumner), - Tracy, S. M. (Samuel Mills), - Greene, Edward Lee,
    Publication info: s.l, s.n, 1901?
    Holding Institution: University Library, University of Illinois Urbana Champaign
  9. By: United States. Department of Agriculture. - Tracy, S. M. (Samuel Mills), - Nealley, George C. - Pool, J. - Vasey, George,
    Publication info: Washington, Govt. Print. Off, 1888
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Herbarium
  10. By: Tracy, S. M. (Samuel Mills), - Nealley, G. C. (George C.) - Pool, J. - Vasey, George,
    Publication info: Washington, Govt. Print. Off, 1888
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Tracy, S. M. (Samuel Mills), - Earle, F. S. (Franklin Sumner),
    Type: Article
    In: Bulletin of the Torrey Botanical Club
    Volume: 23
    Issue: 5
    Date: 1896
    Page Range: 205--211
    Publication Info: New York, Torrey Botanical Club, 1870-1996
  2. By: Tracy, S. M. (Samuel Mills), - Earle, F. S. (Franklin Sumner),
    Type: Article
    In: Bulletin of the Torrey Botanical Club
    Volume: 22
    Date: 1895
    Page Range: 174--208
    Publication Info: New York, Torrey Botanical Club, 1870-1996
  3. By: Tracy, S. M. (Samuel Mills),
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1891-10-15
    Publication Info: [1830-1898]