Showing 1 - 6 of 6 for search: 'Brock, M. R. 1922-', query time: 0.05s
by Brock, M. R. 1922-
Published: U.S. Geological Survey, 1977
Description: color map ; 44 x 71 cm on sheet 74 x 106 cm folded in envelope 30 x 24 cm.
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by Brock, M. R. 1922-
Published: Geological Survey, 1968
Description: 2 maps : 1 color ; each 57 x 45 cm folded to 27 x 18 cm in envelope 30 x 24 cm + 1 pamphlet (5 pages ; 27 cm).
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by Brock, M. R. 1922-
Published: Geological Survey, 1972
Description: 1 map : color ; 45 x 35 cm on sheet 63 x 84 cm folded to 26 x 21 cm in envelope 30 x 24 cm.
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by Heyl, Allen V. 1918-2008,
Published: United States Department of the Interior, Geological Survey, 1965
Description: 1 online resource (20 pages, 3 pages of plates) : maps (some color).
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by Singewald, Q. D. 1902-1987.
Published: U.S. Dept. of the Interior, Geological Survey, 1953
Description: 10 leaves : map ; 27 cm.
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by Christman, Robert A. 1924-
Published: United States Department of the Interior, Geological Survey, 1959
Description: 1 online resource (iv, 491-535 pages, 2 pages of plates) : illustrations, maps, charts.
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Geology Thorium ores Mines and mineral resources Thorium