TY - RPRT TI - Mineral resource potential maps of the Black Butte and Elk Creek Roadless Areas, Mendocino, Lake, and Glenn counties, California AU - H.N. Ohlin AU - R. J. McLaughlin AU - R.L. Oscarson AU - D.M. Peterson AU - R.B. Weed AU - James M. Spear PY - 1983 DO - 10.3133/mf1544a UR - https://pubs.usgs.gov/publication/mf1544A ID - mf1544A ER -