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  1. 21
    Proceedings, Fourth Forum on Geology of Industrial Minerals, March 14 and 15, 1968, Austin, Texas. Themes: I. Geology of Chemical raw materials. II. Depositional models in economic stratigraphy /
    Published 1968
    Conference Proceeding Book
  2. 22
    Proceedings. : Theme: Geology of phosphate, dolomite, limestone, and clay deposits /
    Published 1972
    Conference Proceeding Book
  3. 23
    World atlas of commercial geology.
    Published 1921
    Government Document Book
  4. 24
    Ore deposits of the United States, 1933-1967. : The Graton-Sales volume.
    by Ridge, John Drew, 1909-
    Published 1968
    Book
  5. 25
    Economic geology /
    by Ries, Heinrich, 1871-1951
    Published 1937
    Book
  6. 26
    Uranium geology and mines, South Texas /
    by Eargle, Dolan
    Published 1971
    Book
  7. 27
    Economic mineral deposits /
    by Jensen, Mead LeRoy, 1925-
    Published 1979
    Book
  8. 28
    Glossary of mining geology. : In English, Spanish, French and German /
    Book
  9. 29
    Economic mineral deposits.
    Book
  10. 30
    Introductory economic geology /
    Book
  11. 31
    The geology of oil, oil-shale, and coal.
    by Stuart, Murray
    Published 1926
    Book
  12. 32
    The principles of economic geology /
    Book
  13. 33
    The examination of prospects ; a mining geology /
    Book
  14. 34
    Elements of engineering geology /
    by Ries, Heinrich, 1871-1951
    Published 1947
    Book
  15. 35
    Economic geology of the Rincon pegmatites, San Diego County, California /
    by Hanley, John Bernard, 1913-
    Published 1951
    Book
  16. 36
    Economic geology of the Darwin quadrangle : Inyo County, California /
    by Hall, Wayne E., 1920-
    Published 1958
    Book
  17. 37
    Selected bibliographies of hydrothermal and magmatic mineral deposits.
    by Ridge, John Drew, 1909-
    Published 1958
    Book
  18. 38
    Bibliography of economic geology of South America /
    Book
  19. 39
    Economic geology of the French Gulch quadrangle : Shasta and Trinity Counties, California /
    Book
  20. 40
    Mines and mineral deposits of the southern Flint Creek Range, Montana /
    by Earll, Fred N.
    Published 1972
    Book
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