TY - RPRT TI - Mineral resource potential map of the Ishi, Mill Creek, Polk Springs, and Butt Mountain Roadless Areas, Tehama and Plumas Counties, California AU - J.A. Peterson AU - R. B. Fiebelkorn AU - K. A. Johnson AU - E. E. Cather AU - H. W. Campbell AU - D. K. Denton AU - P. N. Gabby PY - 1983 DO - 10.3133/mf1340c UR - https://pubs.usgs.gov/publication/mf1340C ID - mf1340C ER -