Las Animas Formation (upper Precambrian) in the subsurface of southeastern Colorado / by Tweto, Ogden, 1912-1983

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Pre-Cambrian geology of North America / by Van Hise, Charles Richard, 1857-1918, Leith, C. K. 1875-1956

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Mineral resources of the Llano-Burnet region, Texas : with an account of the pre-Cambrian geology / by Paige, Sidney, 1880-

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Sapphirine in Precambrian rocks associated with stratabound sulfide deposits, Custer County, Colorado / by Raymond, William H., Leiggi, Peter A., Sheridan, Douglas M., 1921-

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Precambrian deposits of zinc-copper-lead sulfides and zinc spinel (gahnite) in Colorado / by Sheridan, Douglas M., 1921-, Raymond, William H.

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The Prichard Formation of the lower part of the Belt Supergroup (middle Proterozoic), near Plains, Sanders County, Montana / by Cressman, Earle Rupert, 1923-

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Pre-Cambrian rocks of Gunnison River, Colorado / by Hunter, J. Fred 1888-1917

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Uranium deposits in the Dripping Spring quartzite, Gila County, Arizona / by Granger, H. C. 1925-, Raup, Robert B. 1929-

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Geology and metallogeny of Archean and Proterozoic basement terranes in the northern midcontinent, U.S.A.--an overview / by Sims, P. K. 1918-2011, Kisvarsanyi, Eva B., Morey, G. B.

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Stratigraphy and lithocorrelation of the Snowslip Formation (Middle Proterozoic Belt Supergroup), Glacier National Park, Montana / by Whipple, James W., Johnson, Sue N.

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Archean and early Proterozoic tectonic framework of North-Central United States and adjacent Canada / by Sims, P. K. 1918-2011

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Structural geology of parautochthonous and allochthonous terranes of the Penokean orogeny in Upper Michigan : comparisons with northern Appalachian tectonics / by Gregg, William J.

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Precambrian crustal blocks in Minnesota : neodymium isotope evidence from basement and metasedimentary rocks / by Hemming, S. R., Hanson, Gilbert N., McLennan, Scott M.

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Review and annotated bibliography of ancient lake deposits (Precambrian to Pleistocene) in the Western States / by Feth, J. H. 1913-

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Gold Deposits Related to Greenstone Belts in Brazil--Deposit Modeling Workshop : Part A--Excursions /

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Petrography and correlation of Precambrian clastic sedimentary rocks associated with the Midcontinent Rift System / by Berendsen, Pieter

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Mineralogy and geochemistry of some Belt rocks, Montana and Idaho : a comparison of rocks from two widely separated area in Belt terrane / by Harrison, Jack Edward, 1924-, Grimes, D. J. 1943-

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Precambrian geology of the northern Bradshaw Mountains, Yavapai County, Arizona / by Anderson, Charles A. 1902-1990, Blacet, Philip M. 1937-

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Precambrian rocks in the Cordes area, Yavapai County, Arizona / by Anderson, Charles A. 1902-1990

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Revision of Precambrian stratigraphy in the Prescott-Jerome area, Yavapai County, Arizona / by Anderson, Charles A. 1902-1990, Blacet, Philip M. 1937-, Silver, Leon T. 1925-, Stern, T. W.

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