@misc{indiciae79e95320be06, title = {Nutrient and pesticide contamination bias estimated from field blanks collected at surface-water sites in U.S. Geological Survey Water-Quality Networks, 2002–12}, author = {Laura Medalie and Jeffrey D. Martin}, year = {2017}, doi = {10.3133/sir20165129}, url = {https://pubs.usgs.gov/publication/sir20165129}, note = {Source identifier: sir20165129} }