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	1.	No cover image available Physiographic, stratigraphic and structural development of the qudrilatero ferrifero minas gerais, Brazil / by John Van N. Dorr by Dorr, John Van N United States Dept. of Interior Series: U.S. Geological Survey professional paper ; 641-A Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington : United States Government Printing Office, 1969 Availability: Items available for loan: National Library of India (1)Call number: U.S 558.151 D 737. Place hold Request article Save to lists
	2.	No cover image available Sample size and meaningful gold analysis / by H. Edward Clifton...[et.al] by Clifton, H. Edward United States Dept. of Interior Series: U.S. Geological Survey professional paper ; 625-C Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington : United States Government Printing Office, 1969 Availability: Items available for loan: National Library of India (1)Call number: U.S 553.41 Sa 47. Place hold Request article Save to lists

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