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1
Report on the operations of the coal-testing plant of the United States Geological Survey at the Louisiana Purchase Exposition, St. Louis, Mo., 1904. Part I. -- Field work, classif...
Published 1906Online Access
Government Document Electronic eBook -
2
Mineral Resources of the United States, calendar year 1911. Part 1. --Metals.
Published 1912Online Access
Government Document Electronic eBook