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  1. By: Hopkins, Milton
    Type: Article
    In: Contributions from the Gray Herbarium of Harvard University
    Issue: 116
    Date: 1937
    Page Range: 63--186
    Publication Info: [Cambridge, Mass.] Harvard University -1984]
  2. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 39
    Date: 1937
    Page Range: 106--148
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  3. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 39
    Date: 1937
    Page Range: 155--186
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  4. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 39
    Date: 1937
    Page Range: 63--98
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  5. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 45
    Date: 1943
    Page Range: 515--517
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  6. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 45
    Date: 1943
    Page Range: 265--277
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  7. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 40
    Date: 1938
    Page Range: 425--434
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  8. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 37
    Date: 1935
    Page Range: 264--266
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  9. By: Hopkins, Milton
    Type: Article
    In: Rhodora
    Volume: 39
    Date: 1937
    Page Range: 52--52
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],