The various B.T.U. values of a coal / by J.F. Barkley and L.R. Burdick

Author: Barkley, J. F. (John Ferdinand), 1888-
Additional Titles: Various British Thermal Unit values of a coal
Published: [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1941.
Physical Description: 26 pages : charts ; 27 cm.
Additional Creators: Burdick, L. R. (Lewis R.) and United States. Bureau of Mines