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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 (short papers and preliminary reports), 1909. Part I. - Metals and nonmetals except fuels, [by] C.W. Hayes and Waldemar Lindgren, geologists in ch...
Published 1910Online Access
Government Document Electronic eBook