Contributions to economic geology, 1905: Gypsum and plasters
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Contributions to economic geology, 1905: Clays
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Contributions to economic geology, 1905: Building stone and road metal
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Contributions to economic geology, 1905 : Glass-making Materials
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Contributions to economic geology, 1905 : Miscellaneous Nonmetals
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Second contribution to the studies on the Cambrian faunas of North America
Herewith I have the honor to transmit the Second of my preliminary studies on the Cambrian Faunas of North America. The larger portion of the report was ready for publication July 7, 1885, but, having visited a number of localities in Utah and Nevada during the season of 1885, numerous additions have been made to both the text and the plates. Very respectfully, CHARLES D. WALCOTT.
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Contributions to economic geology 1906 : Part I - metals and nonmetals except fuels
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Introduction; gold and silver
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels; Copper--Copper deposits of the Hartville Uplift, Wyoming
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Contributions to economic geology 1906 : Part I - metals and nonmetals except fuels -- Nickel, Uranium, etc.; Lead and Zinc
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Iron and Manganese Ores
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Aluminum and Bauxite
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Portland, Natural, and Puzzolan Cements
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Lime, Magnesite
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Gypsum, Plasters
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Clays and Clay Products
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Building Stone and Road Metal
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Contributions to economic geology, 1906, Part I, Metals and nonmetals except fuels--Glass-making Materials
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