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  1. By: Cowles, R. P. (Rheinart Parker),
    Publication info: Manila,Bureau of Printing,1914.
    Holding Institution: Smithsonian Libraries
  2. By: Cowles, R. P. (Rheinart Parker), - Brooks, William Keith, - National Academy of Sciences (U.S.)
    Publication info: Washington :National Academy of Sciences :1905
    Holding Institution: MBLWHOI Library
  3. By: Cowles, R. P. (Rheinart Parker), - Brooks, William Keith,
    Publication info: Washington,Govt. print. off.,1905
    Holding Institution: The Johns Hopkins University Sheridan Libraries (archive.org)
  1. By: Cowles, R. P. (Rheinart Parker),
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 14
    Series: 7
    Date: 1904
    Page Range: 69--78
    Publication Info: London,Taylor and Francis, Ltd.