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  1. By: Packard, R L
    Type: Article
    In: Proceedings of the United States National Museum
    Volume: 17
    Issue: 978
    Date: 1894
    Page Range: 19--20
    Publication Info: Washington Smithsonian Institution Press, [etc.]
  2. By: Packard, R L
    Type: Article
    In: University of Kansas publications, Museum of Natural History
    Volume: 9
    Date: 1960
    Page Range: 579--670
    Publication Info: Lawrence, University of Kansas,
  3. By: Packard, R L
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 71
    Date: 1958
    Page Range: 17--19
    Publication Info: Washington, Biological Society of Washington,