Author: Steven, Thomas A. (Thomas August), 1917-2013 / Subject: Geology - Yale University Library GeoBlacklight Search Results

Start Over Author Steven, Thomas A. (Thomas August), 1917-2013 Subject Geology

1. Geologic map of the Bristol Head quadrangle, Mineral and Hinsdale Counties, Colorado [cartographic material]

1967. 2012-01-19T20:14:09Z. 2020-06-25T19:52:15Z. Steven, Thomas A. (Thomas August), 1917-2013. U.S. Geological Survey. English. Public. Colorado, Mineral County, and Hinsdale County.

2. Geologic map of the Creede quadrangle, Mineral and Saguache Counties, Colorado [cartographic material]

1973. 2012-03-30T15:32:42Z. 2020-06-25T19:48:38Z. Steven, Thomas A. (Thomas August), 1917-2013. The Survey. English. Public. Colorado, Mineral County, and Saguache County.

3. Geologic map of the Spar City quadrangle, Mineral County, Colorado [cartographic material]

1973. 2012-03-30T15:18:31Z. 2020-06-25T19:54:22Z. Steven, Thomas A. (Thomas August), 1917-2013. The Survey. English. Public. Colorado and Mineral County.