TY - RPRT TI - Reconnaissance geologic map of the Pilot Creek Quadrangle, Humboldt and Trinity counties, California AU - K. R. Aalto AU - William Porter Irwin AU - H.M. Kelsey PY - 1988 DO - 10.3133/ofr88363 UR - https://pubs.usgs.gov/publication/ofr88363 ID - ofr88363 ER -