1993. 2002-06-01T04:00:00Z. 2012-07-16T18:05:44Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Pennsylvania, Lehigh County, and Berks County.
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1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Georgia and White County.
1991. 2002-06-01T04:00:00Z. 2012-07-12T20:19:58Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Maine, Waldo County, Hancock County, and Penobscot County.
1992. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Massachusetts and Essex County.
1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Nevada and Nye County.
1991. 2002-06-01T04:00:00Z. 2012-07-13T13:02:01Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Massachusetts and Essex County.
1991. 2002-06-01T04:00:00Z. 2012-07-12T20:24:15Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Massachusetts and Essex County.
1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Vermont, Bennington County, and Windham County.
1993. 2002-06-01T04:00:00Z. 2012-07-13T19:36:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. New Jersey and Sussex County.
1991. 2002-06-01T04:00:00Z. 2012-07-12T20:15:37Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Maine, Hancock County, and Penobscot County.