The purchase of coal under government and commercial specifications on the basis of its heating value : with analyses of coal delivered under government contracts / by D.T. Randall

Author:: Randall, Dwight T.
Published:: Washington, D.C. : Department of the Interior, United States Geological Survey, 1908.
Washington : Government Printing Office
Physical Description:: 1 online resource (27, I page).
Additional Creators:: Geological Survey (U.S.)