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  1. By: Zobel, Donald Bruce,
    Publication info: 1966
    Holding Institution: Duke University Libraries (archive.org)
    Subjects: physiology  Sweetgum  Trees  
  2. By: Guttenberg, Sam. - Putnam, John A. (John Alfred), - Southern Forest Experiment Station (New Orleans, La.) - United States. Department of Agriculture.
    Publication info: New Orleans, LA :Southern Forest Experiment Station,1951.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Forests and forestry  Louisiana  Mississippi River Delta  Mississippi River Delta (La.)  Quercus rubra  Southern States  Sweetgum  Valuation  
  3. By: Schrenk, Hermann von, - United States. Bureau of Plant Industry. - United States. Department of Agriculture. - United States. Government Printing Office.
    Publication info: Washington,Govt. Print. Off.,1907.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Sap-rot  Sweetgum