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  1. By: Darrow, George M. (George McMillan),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1923
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Gould, H. P. - Darrow, George M. (George McMillan),
    Edition: Revised November, 1919
    Publication info: Washington, D.C, United States Department of Agriculture, November, 1919
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Darrow, George M. (George McMillan),
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 49
    Issue: 583
    Date: 1948-07
    Page Range: 166--171
    Publication Info: Lancaster, Pa Published for the Garden by the New Era Printing Co 1900-