LIEU, J.A. van
Coal resources of Lawrence county Pennsylvania / by J. A. van Lieu and Elmer D. Patterson. -- Washington : United States Government Printing Office, 1964 - 33 p. + map. -- (Geological Survey Bulletin ; 1143-B).
Carbón
Pennsylvania
552.574(748)
Coal resources of Lawrence county Pennsylvania / by J. A. van Lieu and Elmer D. Patterson. -- Washington : United States Government Printing Office, 1964 - 33 p. + map. -- (Geological Survey Bulletin ; 1143-B).
Carbón
Pennsylvania
552.574(748)