1. Bedrock geologic map of the Columbia quadrangle, east-central Connecticut [cartographic material]
1967. 2012-01-17T21:37:10Z. 2012-03-05T17:34:06Z. Snyder, George L. (George Leonard), 1927-. The Survey. English. Public. Connecticut.
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1964. 2011-06-20T17:47:17Z. 2012-02-13T19:48:42Z. Snyder, George L. (George Leonard), 1927-. The Survey. English. Public. Connecticut, New London County, and Tolland County.
3. Geologic map of the central part of the Northern Park Range, Jackson and Routt Counties, Colorado
1980. 2014-06-12T15:24:00Z. 2014-06-12T15:24:00Z. Snyder, George L. (George Leonard), 1927-. The Survey. English. Public. Colorado, Jackson County, Routt County, U.S., Jackson County., and Routt County.
1980. 2014-06-17T13:50:29Z. 2014-06-17T13:50:29Z. Snyder, George L. (George Leonard), 1927-. The Survey. English. Public. Colorado, Grand County, Jackson County, Routt County, U.S., Grand County., Jackson County., and Routt County.
1980. 2014-06-12T15:27:57Z. 2014-06-12T15:27:57Z. Snyder, George L. (George Leonard), 1927-. The Survey. English. Public. Colorado, Jackson County, Routt County, U.S., Jackson County., and Routt County.
1961. 2011-05-06T17:31:43Z. 2012-02-14T23:32:38Z. Snyder, George L. (George Leonard), 1927-. The Survey. English. Public. Connecticut and New London County.
