TY - RPRT TI - Atrazine concentrations in near-surface aquifers: A censored regression approach AU - S. Liu AU - S.T. Yen AU - D.W. Kolpin PY - 1996 DO - 10.2134/jeq1996.00472425002500050010x UR - https://pubs.usgs.gov/publication/70018952 ID - 70018952 ER -