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1
Mineral resources of the Llano-Burnet Region, Texas, with an account of the pre-Cambrian geology, by Sidney Paige. [Bulletin 450]
Published 1911Online Access
Government Document Electronic eBook -
2
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 1908Online Access
Government Document Electronic eBook