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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Pohl, Richard W
    Type: Article
    In: Rhodora
    Volume: 64
    Date: 1962
    Page Range: 143--147
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  2. By: Pohl, Richard W
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 12
    Date: 1954
    Page Range: 145--150
    Publication Info: Berkeley, California Botanical Society,
  3. By: Davidse, Gerrit - Pohl, Richard W
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 65
    Date: 1978
    Page Range: 637--649
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  4. By: Pohl, Richard W
    Type: Article
    In: Rhodora
    Volume: 67
    Date: 1965
    Page Range: 95--96
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  5. By: Pohl, Richard W - Gillespie, James P
    Type: Article
    In: Rhodora
    Volume: 61
    Date: 1959
    Page Range: 265--267
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  6. By: Pohl, Richard W
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 73
    Date: 1986
    Page Range: 501
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  7. By: Pohl, Richard W - Baird, Viola Brainerd
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 8
    Date: 1946
    Page Range: 206--208
    Publication Info: Berkeley, California Botanical Society,
  8. By: Pohl, Richard W
    Type: Article
    In: Rhodora
    Volume: 65
    Date: 1963
    Page Range: 146--148
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],