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  1. By: Yampolsky, Cecil
    Type: Article
    In: American journal of botany
    Volume: 6
    Issue: 10
    Date: 1919-12
    Page Range: 410--442
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-
  2. By: Yampolsky, Cecil
    Type: Article
    In: American journal of botany
    Volume: 7
    Issue: 1
    Date: 1920-01
    Page Range: 21--38
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-
  3. By: Yampolsky, Cecil
    Type: Article
    In: American journal of botany
    Volume: 7
    Issue: 3
    Date: 1920-03
    Page Range: 95--100
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-