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1by Shawe, Daniel R., 1925-Subjects: “...Petrology Colorado San Miguel Co....”
Published 1968
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2by Cadigan, Robert Allen, 1918-Subjects: “...Petrology Colorado Plateau....”
Published 1971
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3by Shawe, Daniel R., 1925-Subjects: “...Petrology Colorado Dolores County....”
Published 1968
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4Subjects: “...Petrology Colorado San Miguel County....”
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6by Vickers, Rollin C.Subjects: “...Petrology South Dakota Lawrence County....”
Published 1953
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7by Staatz, Mortimer H. (Mortimer Hay), 1918-2004, Trites, Albert F. (Albert Fillion), 1921-Subjects: “...Petrology Colorado Gunnison County....”
Published 1955
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8by Smedes, Harry W. (Harry Wynn), 1926-Subjects: “...Petrology Montana Elkhorn Mountains....”
Published 1966
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10by Smedes, Harry W. (Harry Wynn), 1926-Subjects: “...Petrology Montana Elkhorn Mountains....”
Published 1966
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11by Wedow, Helmuth, 1917-Subjects: “...Petrology. fast (OCoLC)fst01059885...”
Published 1954
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12by Hawley, C. C. (Charles Caldwell), 1929-, Dyer, H. B. (Henry Brooke), Robeck, R. C. (Raymond C.), 1919-Subjects: “...Petrology Utah Emery County....”
Published 1968
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14by Tooker, Edwin W., 1923-2013Subjects: “...Petrology Front Range (Colo. and Wyo.)...”
Published 1963
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15by Cadigan, Robert Allen, 1918-Subjects: “...Petrology Morrison Formation....”
Published 1967
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16by Duncan, Donald C., 1911-1990Subjects: “...Petrology. fast (OCoLC)fst01059885...”
Published 1953
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17by Gault, H. R. (Hugh Richard), 1915-1961Subjects: “...Petrology. fast (OCoLC)fst01059885...”
Published 1953
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18by Tooker, Edwin W., 1923-2013Subjects: “...Petrology Front Range (Colo. and Wyo.)...”
Published 1963
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