1988. 2002-06-01T04:00:00Z. 2012-07-11T15:29:54Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Colorado, Larimer County, Wyoming, and Albany County.
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1988. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Branch of Distribution. English. Public. Wyoming and Fremont County.