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1
Contributions to economic geology, 1905, [by] S.F. Emmons, E.C. Eckel, geologists in charge. [U.S. Geological Survey Bulletin No. 285. Series A, Economic Geology, 73.]
Published 1906Subjects: Online Access
Government Document Electronic eBook -
2
Contributions to economic geology, 1902, [by] S.F. Emmons [and] C.W. Hayes, geologists in charge. [U.S. Geological Survey Bulletin No. 213. Series A, Economic Geology, 24.]
Published 1903Subjects: Online Access
Government Document Electronic eBook -
3
Contributions to economic geology, 1903. S. F. Emmons, C.W. Hayes, Geologists in Charge. [U.S. Geological Survey Bulletin No. 225. Series A, Economic Geology, 33.]
Published 1904Subjects: Online Access
Government Document Electronic eBook -
4
Mineral Resources of the United States, calendar year 1906.
Published 1907Subjects: Online Access
Government Document Electronic eBook -
5
Mineral Resources of the United States, calendar year 1905, [by] David T. Day, chief of Division of Mining and Mineral Resources.
Published 1906Subjects: Online Access
Government Document Electronic eBook