1968. 2012-01-24T20:44:17Z. 2012-03-05T17:35:59Z. Cullins, Henry L. U.S. Geological Survey. English. Public. Colorado and Rio Blanco County.
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1969. 2012-02-28T16:44:22Z. 2012-02-28T16:44:22Z. Cullins, Henry L. The Survey. English. Public. Colorado, Rio Blanco County, and Moffat County.
1971. 2012-03-13T13:34:45Z. 2012-03-27T23:58:48Z. Cullins, Henry L. The Survey. English. Public. Colorado and Rio Blanco County.
