TY - RPRT TI - Groundwater quality in the Redding–Red Bluff shallow aquifer study unit of the northern Sacramento Valley, California AU - Jennifer S. Harkness AU - Jennifer L. Shelton PY - 2020 DO - 10.3133/fs20203025 UR - https://pubs.usgs.gov/publication/fs20203025 ID - fs20203025 ER -