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1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; Books and Open-File Reports Section, distributor. English. Public. Pennsylvania and Bucks County.
1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; Books and Open-File Reports Section, distributor. English. Public. Pennsylvania and Bucks County.
1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Pennsylvania, Bucks County, and Springfield (Bucks County, Pa. : Township).
1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Pennsylvania and Bucks County.
1999. 2012-07-20T20:34:08Z. 2022-12-08T04:40:36Z. Geological Survey (U.S.). The Survey ; Information Services [distributor]. English. Public. Pennsylvania, Bucks County, Lehigh County, and Northampton County.
1996. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Pennsylvania, Northampton County, Bucks County, and Lehigh County.
1975. 2013-08-20T14:41:07Z. 2013-08-30T19:15:57Z. Owens, James Patrick, 1924-. The Survey. English. Public. New Jersey, Burlington County, Mercer County v Maps., Pennsylvania, and Bucks County.
1961. 2011-05-03T17:24:18Z. 2014-06-10T22:08:04Z. Drake, Avery A., 1927-. U.S. Geological Survey. English. Public. Pennsylvania, Bucks County, New Jersey, and Hunterdon County.
1996. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Pennsylvania, Bucks County, Montgomery County, and Neshaminy Creek Watershed.