TY - RPRT TI - Pesticide and transformation product detections and age-dating relations from till and sand deposits AU - K.L. Warner AU - W.S. Morrow PY - 2007 DO - 10.1111/j.1752-1688.2007.00067.x UR - https://pubs.usgs.gov/publication/70031174 ID - 70031174 ER -