TY - RPRT TI - Variables indicating nitrate contamination in Bedrock Aquifers, Newark Basin, New Jersey AU - R.M. Clawges AU - E. F. Vowinkel PY - 2007 DO - 10.1111/j.1752-1688.1996.tb04073.x UR - https://pubs.usgs.gov/publication/70018149 ID - 70018149 ER -