2001. 2003-08-15T16:01:52Z. 2003-08-18T16:00:47Z. Geological Survey (U.S.). The Survey ; For sale by USGS Information Services. English. Public. Alaska, North Slope, and Philip Smith Mountains.
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1992. 2002-06-01T04:00:00Z. 2015-02-10T16:57:37Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Alaska, North Slope, Beaufort Sea, North Slope., Arctic Ocean, and Beaufort Sea.