Author: Schmidt, Robert George - Yale University Library GeoBlacklight Search Results

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1. Geologic map of the Craig quadrangle, Lewis and Clark and Cascade Counties, Montana [cartographic material]

1977. 2012-06-05T16:00:21Z. 2012-06-13T15:04:22Z. Schmidt, Robert George. The Survey. English. Public. Montana, Lewis and Clark County, Cascade County, and U.S.

2. Preliminary geologic map and sections of the Hogan 4 Southeast quadrangle, Lewis and Clark County, Montana [cartographic material]

1963. 2012-09-18T20:15:29Z. 2013-03-18T22:18:48Z. Schmidt, Robert George. The Survey. English. Public. Montana and Lewis and Clark County.

3. Preliminary geologic map of the Comb Rock quadrangle, Lewis and Clark County, Montana [cartographic material]

1966. 2012-10-02T15:36:29Z. 2013-03-18T22:21:16Z. Schmidt, Robert George. The Survey. English. Public. Montana and Lewis and Clark County.

4. Preliminary geologic map of the Roberts Mountain quadrangle, Lewis and Clark County, Montana

1968. 2012-10-11T18:45:13Z. 2022-12-08T04:40:56Z. Schmidt, Robert George. U.S. Geological Survey. English. Public. Montana and Lewis and Clark County.

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