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  • Book cover of 1975 Summary of Coal Resources in Colorado

    1975 Summary of Coal Resources in Colorado

    A. L. Hornbaker, Richard D. Holt, D. Keith Murray

     · 1976

  • Book cover of 1972 Summary of Coal Resources in Colorado

    1972 Summary of Coal Resources in Colorado

    A. L. Hornbaker, Richard D. Holt

     · 1973

  • Book cover of Geoscience Research Projects for New Mexico, 1972

    Geoscience Research Projects for New Mexico, 1972

    Allan R. Sanford, Arthur Byron Leonard, Charles William Walker, David V. LeMone, Earl F. Sorensen, George B. Asquith, Herbert David Glass, Jean Meyer Olsen, Jiří Zídek, John Chapman Frye, John W. Shomaker, L. A. Brandvold, Lee A. Woodward, P. Doraibabu, Ronald J. Roman, Roy W. Foster, William Daniel Pitt, William R. Seager, George W. Becker, Jacques Renault, Jean A. Meyer, Otto L. Schumacher, Paul Dean Proctor, Richard D. Holt, Ronald B. Stotelmeyer, Russell E. Clemons, Tousson R. Toppozada, William Edward King, Don Hobart Baker, John E. Cunningham

     · 1972

  • No image available

    Bibliography, Coal Resources in Colorado

    Richard D. Holt

     · 1972

  • No image available

    Coal Resources of Southern Ute and Ute Mountain Indian Reservations, Colorado and New Mexico

    John W. Shomaker, Richard D. Holt

     · 1973

  • No image available

    The Stratigraphy of the Arnheim Formation of the Central Basin of Tennessee

    Richard D. Holt

     · 1931

  • No image available

    Coal Resources of Southern Ute and Ute Mountain Ute Indian Reservations, Colorado and New Mexico

    John W. Shomaker

     · 1973

Coded by Alvin Chou