The anthracite coal fields of Pennsylvania and their exhaustion
Subtitle: read before the American Association for the Advancement of Science, at Saratoga, September 1st, 1879
By: by P.W. Sheafer
Publisher: L.S. Hart
Published: 1881
Place of publication: Harrisburg
Language: eng
Number of pages: 16
Subjects: Anthracite coal; Coal mines and mining