@misc{indiciaea4022d8bc237, title = {Relating management practices and nutrient export in agricultural watersheds of the United States}, author = {Lori A. Sprague and Jo Ann M. Gronberg}, year = {2012}, doi = {10.2134/jeq2012.0073}, url = {https://pubs.usgs.gov/publication/70037937}, note = {Source identifier: 70037937} }