Ash utilization :
proceedings: Third International Ash Utilization Symposium. Sponsored by National Coal Association, Edison Electric Institute, American Public Power Association, National Ash Association, and Bureau of Mines, Pittsburgh, Pa., March 13-14, 1973 /
Compiled by John H. Faber, William E. Eckard, and John D. Spencer.

APA Citation

International Ash Utilization Symposium (3rd : 1973 : Pittsburgh)., Spencer, J. D., Eckard, W. E., Faber, J. H., National Ash Association., American Public Power Association., Edison Electric Institute., National Coal Association. (1974). Ash utilization: proceedings: Third International Ash Utilization Symposium. Sponsored by National Coal Association, Edison Electric Institute, American Public Power Association, National Ash Association, and Bureau of Mines, Pittsburgh, Pa., March 13-14, 1973. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.

MLA Citation

National Coal Association, et al.. Ash Utilization: Proceedings: Third International Ash Utilization Symposium. Sponsored by National Coal Association, Edison Electric Institute, American Public Power Association, National Ash Association, And Bureau of Mines, Pittsburgh, Pa., March 13-14, 1973. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1974.