1. Geologic map of the New Britain quadrangle, Connecticut surficial geology / [cartographic material]
1959. 2011-04-28T17:49:47Z. 2012-02-14T23:31:07Z. Simpson, Howard E. The Survey. English. Public. Connecticut and Hartford County.
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1959. 2011-04-29T17:29:27Z. 2012-02-14T23:31:19Z. Gates, Robert Maynard, 1918-. U.S. Geological Survey. English. Public. Connecticut, Litchfield County, and New Haven County.
