Author: Johnson, Ross B., 1919- / Spatial Coverage: Colorado - Yale University Library GeoBlacklight Search Results

Start Over Author Johnson, Ross B., 1919- Spatial Coverage Colorado

1. Coal resources of the La Veta area, Huerfano County, Colorado

1954. 2018-06-21T19:45:28Z. 2018-06-21T19:45:28Z. Johnson, Ross B., 1919-. U.S. Geological Survey. English. cartographic image. Public. Colorado, Huerfano County, U.S., and Huerfano County.

2. Geologic map of the Trinidad quadrangle, south-central Colorado

1969. 2012-10-11T14:27:35Z. 2012-10-11T14:27:35Z. Johnson, Ross B., 1919-. Interior--Geological Survey. English. Public. Colorado.

GeoBlacklight version 4.1.0