Modern concepts of the physical constitution of coal - Cady, Gilbert H. (Gilbert Haven), 1882-; McCabe, Louis Cordell, 1904- (Urbana, Illinois, 1942)
At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education, Frank G. Thompson, Director. Division of the State Geological Survey, M. M. Leighton, Chief, Urbana.
Addresses delivered at the fiftieth anniversary celebration, University of Chicago, September, 1941.
"Reprinted from the Journal of Geology, vol. I, no. 4, May-June, 1942."
Bibliographical foot-notes.
Keywords: Coal -- Analysis; Coal -- Testing