TY  - RPRT
TI  - Water-quality study of Tulpehocken Creek, Berks County, Pennsylvania, prior to impoundment of Blue Marsh Lake
AU  - James L. Barker
PY  - 1977
DO  - 10.3133/wri7755
UR  - https://pubs.usgs.gov/publication/wri7755
ID  - wri7755
ER  -