Mineral transportation costs in the Pacific Northwest :
methodology and application of a statistical analysis /
by Jerry J. Gray, N.S. Petersen, and G.A. Kingston.
APA Citation
Gray, J. J., Kingston, G. A., Petersen, N. S. (1968). Mineral transportation costs in the Pacific Northwest: methodology and application of a statistical analysis. [Washington, D.C.]: U.S. Bureau of Mines.
MLA Citation
Gray, Jerry J, Gary A Kingston, and Norman S Petersen. Mineral Transportation Costs In the Pacific Northwest: Methodology And Application of a Statistical Analysis. [Washington, D.C.]: U.S. Bureau of Mines, 1968.
Warning: These citations may not always be complete (especially for serials).