1988. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Appalachian Region.
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1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by Map Distribution. English. Public. Appalachian Region.
1991. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Appalachian Region.
1978. 2017-10-31T13:11:39Z. 2017-10-31T13:11:39Z. Williams, Harold, 1934-. Memorial University of Newfoundland : Available from Dept. of Geology, Memorial University. English. cartographic image. Public. Appalachian Region, Canada, Appalachian Orogen., North America, Appalachian Orogen., United States Appalachian Orogen., Appalachian Region., Appalaches, and Amérique du Nord.