Contributions to economic geology, 1905: Introduction; Investigation of metalliferous ores; Investigation of iron ores and nonmetalliferous minerals; Gold and silver
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Geology topics
E.C. Eckel
Publications and source records attributed to E.C. Eckel.
Contributions to economic geology, 1905 : Iron and Manganese
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Contributions to economic geology, 1905: Portland, natural, and Puzzolan cements
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Contributions to economic geology, 1905: Clays
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