TY - RPRT TI - Map showing geochemical summary for the Bald Rock and Middle Fork Feather River Roadless Areas, Butte and Plumas counties, California AU - Jocelyn A. Peterson AU - Martin L. Sorensen PY - 1985 DO - 10.3133/mf1427c UR - https://pubs.usgs.gov/publication/mf1427C ID - mf1427C ER -