@misc{indiciaec55a2dcc4b08, title = {Nutrients in the nation's streams and groundwater: National findings and implications}, author = {Neil M. Dubrovsky and Pixie A. Hamilton}, year = {2010}, doi = {10.3133/fs20103078}, url = {https://pubs.usgs.gov/publication/fs20103078}, note = {Source identifier: fs20103078} }