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Primary view of Estimate of Known Recoverable Reserves of Coking Coal in Jefferson County, Pennsylvania
Dowd, James J.; Toenges, Albert L.; Abernethy, R. F. & Reynolds, D. A.
January 1952
Primary view of Radioactivity of Coals and Associated Rocks in Beaver, Clearfield, and Jefferson Counties, Pennsylvania
Ferm, John C.
January 1955
Primary view of [News Script: Ground hog]
WBAP-TV (Television station : Fort Worth, Tex.)
February 2, 1971, 12:00 p.m.
Primary view of Sedimentation in the East Branch Mahoning Creek Basin, Clearfield and Jefferson Counties, Pennsylvania, June 1979 to June 1980
Wetzel, Kim L.
February 1982
Primary view of Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses
Lord, N. W.
1913
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