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Proceedings of the Academy of Natural Sciences of Philadelphia v.73 (1921)

Parts

  1. By: Alexander, Charles P. (Charles Paul),
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 73
    Date: 1921
    Page Range: 39--103
    Publication info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  2. By: Hebard, Morgan,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 73
    Issue: 2
    Date: 1921
    Page Range: 193--304
    Publication info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  3. By: Pilsbry, Henry Augustus,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 73
    Date: 1921
    Page Range: 305--435
    Publication info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  4. By: Fowler, Henry W.,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 73
    Date: 1922
    Page Range: 437--448
    Publication info: Philadelphia, Academy of Natural Sciences of Philadelphia,