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  1. By: Gifford, Gerald F. - Williams, Gerald, - Coltharp, George B. - United States. Bureau of Land Management. - Utah Agricultural Experiment Station.
    Publication info: [Logan, Utah], Utah Agricultural Experiment Station, 1971
    Holding Institution: Bureau of Land Management
  1. By: Phillippi, Ann - Coltharp, George B.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 51
    Issue: 1-2
    Date: 1990-03
    Page Range: 18--25
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  2. By: Moore, Ian D. - Coltharp, George B. - Sloan, Patrick G.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 44
    Issue: 3-4
    Date: 1983-09
    Page Range: 135--145
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  3. By: Shearer, Michael T. - Coltharp, George B. - Wittwer, Robert F.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 38
    Issue: 3-4
    Date: 1977-09
    Page Range: 111--115
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997
  4. By: Springer, Everett P. - Coltharp, George B.
    Type: Article
    In: Transactions of the Kentucky Academy of Science
    Volume: 39
    Issue: 1-2
    Date: 1978-03
    Page Range: 31--38
    Publication Info: [Lexington, Ky.], Kentucky Academy of Science, 1923-1997