Baked shale and slag formed by the burning of coal beds
By: by G. Sherburne Rogers.
Series: Geological Survey professional paper -- 108-A; Shorter contributions to general geology
Publisher: U.S. G.P.O.
Published: 1917
Place of publication: [Washington
Language: eng
Number of pages: 10
Subjects: Coal -- Geology.; Shale.; Slag.
Notes: Includes bibliographical footnotes and index.