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  1. By: Hibbard, Claude William, - Rinker, George C.
    Type: Article
    In: The University of Kansas science bulletin
    Volume: 28
    Issue: 2
    Date: 1942-05-15
    Page Range: 25--35
    Publication Info: [Lawrence], University of Kansas, [1926-1996]
  2. By: Hibbard, Claude William, - Rinker, George C.
    Type: Article
    In: The University of Kansas science bulletin
    Volume: 29
    Issue: 4
    Date: 1943-10-15
    Page Range: 255--268
    Publication Info: [Lawrence], University of Kansas, [1926-1996]