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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hobbs, Horton H. (Horton Holcombe)
    Publication info: 1940
    Holding Institution: Smithsonian Institution Archives
    Subjects: Crayfish  Field notes  Invertebrates  Limnology  Mexico  Nuevo LeÛn  
    BHL Collections: Smithsonian Field Books collection