TY  - RPRT
TI  - National Water Quality Assessment Program (NAWQA)
AU  - D.R. Jones
AU  - M. A. Sylvester
PY  - 1992
DO  - 10.3133/ofr92145
UR  - https://pubs.usgs.gov/publication/ofr92145
ID  - ofr92145
ER  -