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  1. By: Arnold, Ralph, - Anderson, Robert van Vleck,
    Publication info: Washington Govt. Print. Off 1907
    Holding Institution: Multiple institutions
  2. By: Arnold, Ralph,
    Publication info: Washington, Govt. Print. Off, 1909
    Holding Institution: University of Toronto - Robarts Library
  3. By: Eldridge, George Homans, - Arnold, Ralph,
    Publication info: Washington Govt. print. off 1907
    Holding Institution: Library of Congress
  4. By: Arnold, Ralph,
    Publication info: Washington, Govt. Print. Off, 1906
    Holding Institution: Smithsonian Libraries and Archives
  1. By: Arnold, Ralph,
    Type: Article
    In: Proceedings of the United States National Museum
    Volume: 34
    Issue: 1620
    Date: 1908
    Page Range: 403--405
    Publication Info: Washington Smithsonian Institution Press, [etc.]
  2. By: Arnold, Ralph,
    Type: Article
    In: Proceedings of the United States National Museum
    Volume: 34
    Issue: 1617
    Date: 1908
    Page Range: 345--389
    Publication Info: Washington Smithsonian Institution Press, [etc.]
  3. By: Arnold, Ralph,
    Type: Article
    In: Smithsonian miscellaneous collections
    Volume: 50
    Date: 1908
    Page Range: 419--447
    Publication Info: Washington Smithsonian Institution 1862-1972
  4. By: Arnold, Ralph,
    Type: Article
    In: Proceedings of the United States National Museum
    Volume: 32
    Issue: 1545
    Date: 1907
    Page Range: 525--546
    Publication Info: Washington Smithsonian Institution Press, [etc.]