1939. 2011-12-12T21:36:02Z. 2022-03-29T20:40:32Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
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2. Kane, Penn
1939. 2011-12-12T21:36:19Z. 2022-03-29T20:40:33Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
1939. 2011-12-12T21:36:27Z. 2022-03-29T20:40:34Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
1939. 2013-05-13T17:43:18Z. 2015-10-27T22:11:31Z. United States. Bureau of Public Roads. The Survey. English. Public. Pennsylvania.
1939. 2013-05-14T16:40:02Z. 2015-10-27T22:11:32Z. United States. Bureau of Public Roads. The Survey. English. Public. Pennsylvania, Philadelphia Region, and Philadelphia Region (Pa.).
1939. 2011-12-12T21:36:36Z. 2022-03-29T20:40:35Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.
1939. 2011-12-12T21:36:39Z. 2022-03-29T20:40:35Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Pennsylvania.