RT Journal Article SR Electronic T1 Costs of groundwater nitrate contamination JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 92A OP 92A DO 10.2489/jswc.63.3.92A VO 63 IS 3 A1 Ann M. Lewandowski YR 2008 UL http://www.jswconline.org/content/63/3/92A.abstract AB