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  1. By: Chamberlin, Ralph V. (Ralph Vary), - Gertsch, Willis John, - Utah Museum of Natural History
    Publication info: New York City The American Museum of Natural History [1940]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.54,4G  Arachnida  Catalogs and collections  Classification  Gnaphosidae  New York  New York (State)  Spiders  United States  Utah
  2. By: Chamberlin, Ralph V. (Ralph Vary), - Gertsch, Willis John,
    Publication info: New York City, The American Museum of Natural History, [1933]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.54,4G  Alberta  Arachnida  Classification  Gnaphosa antipola  Gnaphosa mima  Haplodrassus altanus  Haplodrassus magister  Minnesota  Spiders  West (U.S.)
  3. By: Chamberlin, Ralph V. (Ralph Vary),
    Publication info: New York City, The American Museum of Natural History, [1936]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.54,4G  Arachnida  Classification  Gnaphosidae  Spiders  United States
  4. By: Chamberlin, Ralph V. (Ralph Vary), - Britcher, Henry W. - Lutz, Frank Eugene, - Gertsch, Willis John,
    Publication info: New York City, The American Museum of Natural History, [1936]
    Holding Institution: American Museum of Natural History Library
    Subjects: 59.54,4G  Arachnida  Classification  Gnaphosidae  North America  Spiders  United States