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.
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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.).
1971. 2012-11-07T21:31:25Z. 2012-11-07T21:31:25Z. Kent, Bion H. (Bion Huntley), 1925-. The Survey. English. Public. Pennsylvania and Greene County.
1967. 2012-01-19T20:12:15Z. 2012-03-05T17:34:46Z. Kent, Bion H. (Bion Huntley), 1925-. Geological Survey. English. Public. Pennsylvania and Washington County.
1969. 2012-02-28T16:03:29Z. 2012-02-28T16:03:29Z. Kent, Bion H. (Bion Huntley), 1925-. Geological Survey. English. Public. Pennsylvania, Greene County, and Washington County.
1972. 2012-03-26T13:55:58Z. 2012-05-03T15:31:54Z. Kent, Bion H. (Bion Huntley), 1925-. Geological Survey. English. Public. Pennsylvania, Washington County, and Greene County.