1969. 2012-10-15T15:18:29Z. 2013-03-18T22:23:21Z. Kent, Bion H. (Bion Huntley), 1925-. The Survey. English. Public. Pennsylvania, Greene County, and Washington County.
Search Results
1974. 2012-11-29T21:42:00Z. 2013-03-18T20:47:45Z. Kent, Bion H. (Bion Huntley), 1925-. Interior--Geological Survey. English. Public. Pennsylvania, Masontown Region, Monongahela River Valley (W. Va. and Pa.), and Masontown Region (Pa.).
1980. 2012-10-22T13:34:45Z. 2012-10-22T13:34:45Z. Pennsylvania. Bureau of Topographic and Geologic Survey. The Survey. English. Public. Pennsylvania.
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.
1971. 2012-03-14T14:47:40Z. 2012-03-27T23:59:11Z. Arndt, Harold H. U.S. Geological Survey. English. Public. Pennsylvania, Columbia County, and Schuylkill County.
1976. 2013-08-26T20:16:30Z. 2013-09-04T19:51:57Z. Schweinfurth, Stanley P. U.S. Geological Survey. English. Public. Pennsylvania and Washington County.
1971. 2012-03-13T14:07:19Z. 2012-03-27T23:58:50Z. Alvord, Donald C. (Donald Clayton), 1922-. The Survey. English. Public. Pennsylvania, Pike County, Monroe County, New Jersey, and Warren County.
1967. 2012-01-20T18:53:49Z. 2012-03-05T17:35:01Z. Schweinfurth, Stanley P. U.S. Geological Survey. English. Public. Pennsylvania, Fayette County, and Washington County.
1973. 2012-03-30T15:34:39Z. 2012-05-03T15:34:42Z. Wood, Gordon H. (Gordon Harry), 1919-. Geological Survey. English. Public. Pennsylvania and Schuylkill County.
1967. 2012-01-17T21:40:42Z. 2012-03-05T17:34:07Z. Drake, Avery Ala, 1927-. Geological Survey. English. Public. Pennsylvania, Northumberland County, New Jersey, and Warren County.
