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  1. By: Gardner, Daniel Pereira,
    Publication info: [Place of publication not identified], [Publisher not identified], [1846]
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Agricultural ecology  Biochemistry  
  2. By: Cook, O. F. (Orator Fuller), - United States. Bureau of Plant Industry.
    Publication info: Washington, U.S. Dept. of Agriculture, 1909
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Agricultural ecology  Central America  Plant ecology