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  1. By: Mell, Clayton D. - Brush, Warren David,
    Publication info: Washington, G.P.O, 1913
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Brush, Warren David,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1922
    Holding Institution: Multiple institutions
  3. By: Brush, Warren David,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1921
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Brush, Warren David,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1918
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Brush, Warren David,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1920
    Holding Institution: Multiple institutions
  1. By: Brush, Warren David,
    Type: Article
    In: Botanical gazette
    Volume: 64
    Issue: 6
    Date: 1917
    Page Range: 480--496
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991