TY - RPRT TI - Water quality status and trends in the United States AU - Matthew C. Larsen AU - Pixie A. Hamilton AU - William H. Werkheiser PY - 2013 DO - 10.1016/b978-0-444-59395-5.00002-9 UR - https://pubs.usgs.gov/publication/70156864 ID - 70156864 ER -