TY - RPRT TI - Evaluation and use of U.S. Environmental Protection Agency Clean Watersheds Needs Survey data to quantify nutrient loads to surface water, 1978–2012 AU - Tamara I. Ivahnenko PY - 2017 DO - 10.3133/sir20175115 UR - https://pubs.usgs.gov/publication/sir20175115 ID - sir20175115 ER -