Tunnel boring technology :
disk cutter experiments in sedimentary and metamorphic rocks /
by Roger J. Morrell, William E. Bruce, and David A. Larson.

APA Citation

Morrell, R. J., Larson, D. A., Bruce, W. E., United States. Bureau of Mines. (1970). Tunnel boring technology: disk cutter experiments in sedimentary and metamorphic rocks. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines.

MLA Citation

Morrell, Roger J, David A Larson, William E Bruce, and United States. Bureau of Mines. Tunnel Boring Technology: Disk Cutter Experiments In Sedimentary And Metamorphic Rocks. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, 1970.