Coal conservation
Subtitle: papers read before American Mining Congress, Dec. 3, 1908, at Pittsburgh, Pa.
By: by F.M. Osborne, J.V. Thompson, and I.C. White.
Contributors: YA Pamphlet Collection (Library of Congress)
Publisher: American Mining Congress
Published: 1908
Place of publication: [S.l.]
Language: eng
Number of pages: 18
Subjects: Coal reserves -- United States.