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  1. By: Wann, F. B.
    Type: Article
    In: American journal of botany
    Volume: 8
    Issue: 1
    Date: 1921-01
    Page Range: 1--29
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-
  2. By: Wann, F. B. - Muenscher, W C
    Type: Article
    In: Mycologia
    Volume: 14
    Issue: 1
    Date: 1922
    Page Range: 38--41
    Publication Info: [Bronx, etc.], New York Botanical Garden,