TY - RPRT TI - Stability of low levels of perchlorate in drinking water and natural water samples AU - S.J. Stetson AU - R. B. Wanty AU - D.R. Helsel AU - S. J. Kalkhoff AU - D.L. Macalady PY - 2006 DO - 10.1016/j.aca.2006.03.030 UR - https://pubs.usgs.gov/publication/70030376 ID - 70030376 ER -