@misc{indiciaea14f7b53b0f2, title = {The quality of our nation's waters; nutrients and pesticides; a summary}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1999}, doi = {10.3133/fs11699}, url = {https://pubs.usgs.gov/publication/fs11699}, note = {Source identifier: fs11699} }