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  1. By: Stephenson, Lloyd William,
    Publication info: Washington, Govt. print. off, 1914
    Holding Institution: Smithsonian Libraries and Archives
  2. By: Maryland Geological Survey. - Bassler, Ray S. (Ray Smith), - Berry, Edward Wilber, - Berry, Edward Wilber, - Clark, William Bullock, - Gardner, Julia Anna, - Goldman, Marcus I. - Pilsbry, Henry Augustus, - Stephenson, Lloyd William,
    Publication info: Baltimore, The Johns Hopkins press, 1916
    Holding Institution: University of California Libraries
  1. By: Stephenson, Lloyd William,
    Type: Article
    In: Journal of the Washington Academy of Sciences
    Volume: 25
    Date: 1935
    Page Range: 362--363
    Publication Info: Washington [etc Washington Academy of Sciences]