The economic importance of the coal idustry to Pennsylvania.
Subtitle: Special report of research, conducted in Dept. of Mineral Economics, College of Earth and Mineral Sciences, The Pensylvania State University
Contributors: Schanz, John J. 1923-; Pennsylvania. Dept. of Mines and Mineral Industries. Coal Research Board
Published: 1967
Place of publication: [University Park, Pa.]
Language: eng
Number of pages: 9289
Subjects: Coal mines and mining -- Pennsylvania