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	1.	No cover image available Early Silurian graptolites from southeastern Alaska and their correlation with graptolitic sequences in North America and the Arctic / by Michael Churkin, Jr., and Claire Carter by Churkin, Michael, 1932- Carter, Claire [jt. aut] Series: Geological Survey professional paper ; 653 Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : United States Government Printing Office, 1970 Availability: Items available for loan: National Library of India (1)Call number: U.S 550.8 C 476( pap. no. 653). Place hold Request article Save to lists
	2.	No cover image available Paleozoic and Precambrian rocks of Alaska and their role in its structural evolution / by Michael Churkin, Jr. by Churkin, Michael, 1932- United States Dept. of Interior Series: Geological Survey professional paper ; 740 Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C : United States Government Printing Office, 1973 Availability: Items available for loan: National Library of India (1)Call number: U.S 551.7209798 C 476 p (Pap.no.740). Place hold Request article Save to lists

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