TY - RPRT TI - Water quality and possible sources of nitrate in the Cimarron Terrace Aquifer, Oklahoma, 2003 AU - Jason R. Masoner AU - Shana L. Mashburn PY - 2004 DO - 10.3133/sir20045221 UR - https://pubs.usgs.gov/publication/sir20045221 ID - sir20045221 ER -