TY  - RPRT
TI  - Trends in surface-water quality during implementation of best-management practices in Mill Creek and Muddy Run Basins, Lancaster County, Pennsylvania
AU  - Edward H. Koerkle
PY  - 2000
DO  - 10.3133/fs16899
UR  - https://pubs.usgs.gov/publication/fs16899
ID  - fs16899
ER  -