TY - RPRT TI - Challenges with secondary use of multi-source water-quality data in the United States AU - Lori A. Sprague AU - Gretchen P. Oelsner AU - Denise M. Argue PY - 2017 DO - 10.1016/j.watres.2016.12.024 UR - https://pubs.usgs.gov/publication/70179304 ID - 70179304 ER -