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  1. By: Hyman, Libbie Henrietta,
    Publication info: New York, N.Y, American Museum of Natural History, [1955]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.51,23(73)  Classification  Platyhelminthes  Turbellaria  United States  
  2. By: Hyman, Libbie Henrietta,
    Publication info: New York City, The American Museum of Natural History, [1943]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.51,23(73)  Classification  Nomenclature  Platyhelminthes  Rhynchodemidae  Tricladida  Turbellaria  United States