1986. 2008-09-08T17:45:04Z. 2011-03-25T22:58:31Z. Benson, Richard N. Delaware Geological Survey, University of Delaware. English. Public. Delaware and Kent County.
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2. Structure contour map of pre-Mesozoic basement, landward margin of Baltimore Canyon trough : 1984
1984. 2008-09-09T18:17:58Z. 2011-03-28T21:58:04Z. Benson, Richard N. Delaware Geological Survey, University of Delaware. English. Public. Baltimore Canyon.