@misc{indiciae3dc70756be94, title = {Relations of Water Quality to Agricultural Chemical Use and Environmental Setting at Various Scales - Results from Selected Studies of the National Water-Quality Assessment Program}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {2008}, doi = {10.3133/fs20073088}, url = {https://pubs.usgs.gov/publication/fs20073088}, note = {Source identifier: fs20073088} }