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1.
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Summery of the engineering geology of the Harold D. Roberts tunnel, Colorado / by Ernest E. Wahlstrom by Series: U.S. Geological Survey bulletin ; 831-E
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington, D.C. : United States Government Printing Office, 1981
Availability: Items available for loan: National Library of India (1)Call number: U.S 624.1920978856 W 127.

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2.
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Geology of the Western part of the Harold D. Roberts Tunnel, Colorado (stations 0+00 to 690+00) / by Ernest E. Wahlstrom, Charles S. Robinson and Quentin Hornback by Series: Geological Survey prfessional paper ; 831-C
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington, D.C. : U.S. Department of Interior, 1981
Availability: Items available for loan: National Library of India (1)Call number: U.S 557.880223 W 11.

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3.
No cover image available
Geology of the Western part of the Harold D. Roberts Tunnel, Colorado (stations 0+00 to 690+00) / by Ernest E. Wahlstrom, Charles S. Robinson and Quentin Hornback by Series: Geological Survey prfessional paper ; 831-C
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington, D.C. : U.S. Department of Interior, 1981
Availability: Items available for loan: National Library of India (1)Call number: U.S 557.880223 W 11.

Place hold Request article Save to lists
                                                                           
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