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The geology of Pennsylvania : a government survey with a general view of the geology of the United States, essays on coal-formation and its fossils, and a description of the coal-fields of North America and Great Britain (v.1)
Rogers, Henry Darwin (1808-1866); Rogers, William Barton (1804-1882); Lesquereux, Leo (1806-1889); Pennsylvania Geological Survey
1858
Vol. II, pts. I-II, paged continuously. 7 maps in folder. "On the origin and accumulation of the proto-carbonate of iron in Coal-Measures, &c. by Professor William B. Rogers": v. 2, pt. 2, p. 737-...
The geology of Pennsylvania : a government survey with a general view of the geology of the United States, essays on coal-formation and its fossils, and a description of the coal-fields of North America and Great Britain (v.2, pt.1)
Rogers, Henry Darwin (1808-1866); Rogers, William Barton (1804-1882); Lesquereux, Leo (1806-1889); Pennsylvania Geological Survey
1858
Vol. II, pts. I-II, paged continuously. 7 maps in folder. "On the origin and accumulation of the proto-carbonate of iron in Coal-Measures, &c. by Professor William B. Rogers": v. 2, pt. 2, p. 737-...
The geology of Pennsylvania : a government survey with a general view of the geology of the United States, essays on coal-formation and its fossils, and a description of the coal-fields of North America and Great Britain (v.2, pt.2)
Rogers, Henry Darwin (1808-1866); Rogers, William Barton (1804-1882); Lesquereux, Leo (1806-1889); Pennsylvania Geological Survey
1858
Vol. II, pts. I-II, paged continuously. 7 maps in folder. "On the origin and accumulation of the proto-carbonate of iron in Coal-Measures, &c. by Professor William B. Rogers": v. 2, pt. 2, p. 737-...
The geology of Pennsylvania : a government survey with a general view of the geology of the United States, essays on coal-formation and its fossils, and a description of the coal-fields of North America and Great Britain (Maps)
Rogers, Henry Darwin (1808-1866); Rogers, William Barton (1804-1882); Lesquereux, Leo (1806-1889); Pennsylvania Geological Survey
1858
Vol. II, pts. I-II, paged continuously. 7 maps in folder. "On the origin and accumulation of the proto-carbonate of iron in Coal-Measures, &c. by Professor William B. Rogers": v. 2, pt. 2, p. 737-...