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  1. By: Cummins, George B. (George Baker), - Stevenson, John A. (John Albert), - United States. Plant Disease Epidemics and Identification Section.
    Publication info: Beltsville, Md, Plant Disease Epidemics and Identification Section, Agricultural Research Service, United States Department of Agriculture, 1956
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Cummins, George B. (George Baker), - United States. Plant Disease Epidemics and Identification Section.
    Publication info: Beltsville, Md, Plant Disease Epidemics and Identification Section, Agricultural Research Service, United States Department of Agriculture, 1956
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Cummins, George B. (George Baker), - Baxter, John W
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 16
    Date: 1962
    Page Range: 201--203
    Publication Info: Berkeley, California Botanical Society,