TY  - RPRT
TI  - Delaware River water quality Bristol to Marcus Hook, Pennsylvania, August 1949 to December 1963
AU  - Walter B. Keighton
PY  - 1965
DO  - 10.3133/wsp1809o
UR  - https://pubs.usgs.gov/publication/wsp1809O
ID  - wsp1809O
ER  -