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	1.	No cover image available Petrographic mineralogy / EArnest E. Wahlstrom by Wahlstrom, Ernest Eugene, 1909- Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: New York : Wiley, c1955 Availability: Items available for loan: National Library of India (1)Call number: S.T 552.1 W 127. Place hold Request article Save to lists
	2.	No cover image available History of geologic investigations, engineering design, and construction methods of the Harold D. Roberts Tunnel, Colorado / by Ernest E. Wahlstrom by Wahlstrom, Ernest Eugene, 1909- Series: Engineering geology of the Harold D. Roberts Tunnel, Colorado Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : United States Government Printing Office, 1974 Availability: Items available for loan: National Library of India (1)Call number: U.S 624.1920978845 W 127 h. Place hold Request article Save to lists

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