TY - RPRT TI - Age Determination of the Remaining Peat in the Sacramento-San Joaquin Delta, California, USA AU - Judith Z. Drexler AU - Christian S. de Fontaine AU - Donna L. Knifong PY - 2007 DO - 10.3133/ofr20071303 UR - https://pubs.usgs.gov/publication/ofr20071303 ID - ofr20071303 ER -