@misc{indiciae4241b68fc6a1, title = {Trends in pesticide concentrations in urban streams in the United States, 1992-2008}, author = {Karen R. Ryberg and Aldo V. Vecchia and Jeffrey D. Martin and Robert J. Gilliom}, year = {2010}, doi = {10.3133/sir20105139}, url = {https://pubs.usgs.gov/publication/sir20105139}, note = {Source identifier: sir20105139} }