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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Crocker, Denton W.
    Publication info: 1952-1959
    Holding Institution: Smithsonian Institution Archives
    Subjects: Field notes  Freshwater invertebrates  Maine  Massachusetts  New Hampshire  Orconectes  United States  West Virginia
    BHL Collections: Smithsonian Field Books collection
  2. By: Crocker, Denton W.
    Publication info: 1952-1960
    Holding Institution: Smithsonian Institution Archives
    Subjects: Field notes  Freshwater invertebrates  Georgia  Idaho  Louisiana  Maine  Massachusetts  New Jersey  New York  Orconectes  United States  Virginia
    BHL Collections: Smithsonian Field Books collection