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	1.	No cover image available Field instrumentation studies of earth tremors and their geologic environments in central Utah coal mining areas, by Frank W. Osterwald...[et. al.] by Geological Survey (U.S.) Osterwald, Frank W Series: Geological Survey professional paper ; 693 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, U.S. Govt. Print. Off., 1971 Availability: Items available for loan: National Library of India (1)Call number: U.S. 551.2209792566 Os 1 (Bull. No.693). Place hold Request article Save to lists
	2.	No cover image available Instrumentation studies of earth tremors related to geology and to mining at the Somerset coal mine, Colorado / by Frank W. Osterwald...[et al.] by Osterwald, Frank W Series: Geological Survey professional paper ; 762 Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : United States Government Printing Office, 1972 Availability: Items available for loan: National Library of India (1)Call number: U.S 551.220978818 In 7(pap. no. 762). Place hold Request article Save to lists

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