Geology of the eastern part of the Harold D. Roberts Tunnel, Colorado (Stations 690+00 to 1238+58) /
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of the Interior, Geological Survey :
1981.
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| Series: | Geological Survey professional paper ;
831-D. Engineering geology of the Harold D. Roberts Tunnel, Colorado. |
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| Item Description: | Five folded plates of ill. in pocket. |
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| Physical Description: | vi, 31 pages : illustrations, maps ; 29 cm. |
| Bibliography: | Bibliography: page 31. |