TY  - RPRT
TI  - Assessment of stream conditions and trends in biological and water-chemistry data from selected streams in Chester County, Pennsylvania, 1981-97
AU  - Andrew G. Reif
PY  - 2002
DO  - 10.3133/wri024242
UR  - https://pubs.usgs.gov/publication/wri024242
ID  - wri024242
ER  -