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  1. 1
    Illinois industrial minerals notes.
    Serial
  2. 2
    Electrical earth resistivity surveying in Illinois /
    by Buhle, Merlyn Boyd
    Published 1964
    Book
  3. 3
    A restudy of the Staunton gas pool /
    by Mylius, Louis Aubrey, 1890-
    Published 1919
    Book
  4. 4
    Industrial minerals notes.
    Serial
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