Spatial Coverage: U.S. / Year: 1975 - Yale University Library GeoBlacklight Search Results

Start Over Spatial Coverage U.S. Year 1975

1. Bedrock topography of northeast Iowa [cartographic material]

1975. 2013-08-30T16:36:12Z. 2013-09-04T19:53:07Z. Hansen, Robert E. Dept. of the Interior, U.S. Geological Survey. English. Public. Iowa and U.S.

2. Geologic and biostratigraphic map of the Pierre shale in the Canon City-Florence Basin and the Twelvemile Park area, south-central Colorado [cartographic material]

1975. 2013-08-30T18:30:50Z. 2013-09-04T19:53:08Z. Scott, Glenn Robert, 1918-. The Survey. English. Public. Colorado, Fremont County, Custer County, and U.S.

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