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  1. By: Ruth, W. A. (Warren Albert), - Kelley, Victor W. (Victor Wendell),
    Publication info: [Urbana, Ill.], University of Illinois Agricultural Experiment Station, [1932]
    Holding Institution: University Library, University of Illinois Urbana Champaign
  1. By: Ruth, W. A. (Warren Albert),
    Type: Article
    In: American journal of botany
    Volume: 9
    Issue: 10
    Date: 1922-12
    Page Range: 535--550
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-