Showing 1 - 4 of 4 for search: 'Hodgson, Helen E.', query time: 0.04s
Published: Colorado Geological Survey, Dept. of Natural Resources, State of Colorado, 1978
Description: viii, 219 pages : illustrations ; 28 cm.
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Rev. 1981.
by Geological Survey (U.S.)
Published: U.S. Dept. of the Interior, Geological Survey ; Branch of Distribution, U.S. Geological Survey, 1981
Description: 42 pages : illustrations ; 26 cm.
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Published: Colorado Geological Survey, Department of Natural Resources, State of Colorado, 1978
Description: 1 online resource (viii, 219 pages) : illustrations.
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Published: United States Department of the Interior, Geological Survey, 1978
Description: 1 online resource (42 pages).
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