@misc{indiciaed40373e9c590, title = {Estimation of nonpoint source loadings of phosphorus for lakes in the Puget Sound region, Washington}, author = {Robert J. Gilliom}, year = {1983}, doi = {10.3133/wsp2240}, url = {https://pubs.usgs.gov/publication/wsp2240}, note = {Source identifier: wsp2240} }