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  1. By: Campbell, R. S. - Cassady, John T. (John Thomas), - Southern Forest Experiment Station (New Orleans, La.)
    Publication info: [New Orleans, La.], USDA Forest Service, Southern Forest Experiment Station, 1955
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Chapline, W. R. (William Ridgely), - Campbell, R. S. - United States. Forest Service.
    Publication info: Washington, United States Government Printing Office, 1934
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Campbell, R. S.
    Type: Article
    In: Journal of the Washington Academy of Sciences
    Volume: 33
    Date: 1943
    Page Range: 161--169
    Publication Info: Washington [etc Washington Academy of Sciences]