#17 Yellowstone River Basin and Adjacent Coal Area Level B Study, Final Drafts, Missouri River Basin Commission. Volume 1-Report and Environmental Assessment, November 1978. Volume 2-Upper Yellowstone, Montana, January 1978. Volume 3-Clarks Fork-Bighorn, Montana, May 1978. Volume 4-Tongue and Powder, Montana, January 1978. Volume 5-Lower Yellowstone, Montana, May 1978. Volume 6-North Dakota Tributaries, February 1978. Volume 7-Wind/Bighorn/Clarks Fork, Wyoming, April, 1978.