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Contributions to economic geology, 1907. Part I. -- Metals and nonmetals, except fuels, [by] C.W. Hayes and Waldemar Lindgren, geologists in charge. [U.S. Geological Survey Bulleti...
Published 1908Subjects: Online Access
Government Document Electronic eBook -
2
Mineral Resources of the United States, calendar year 1906.
Published 1907Subjects: Online Access
Government Document Electronic eBook