TY  - RPRT
TI  - Quality of rivers of the United States, 1974 water year: based on the National Stream Quality Accounting Network (NASQAN)
AU  - Richard O. Hawkinson
AU  - John F. Ficke
AU  - L.G. Saindon
PY  - 1977
DO  - 10.3133/ofr77151
UR  - https://pubs.usgs.gov/publication/ofr77151
ID  - ofr77151
ER  -