TY  - RPRT
TI  - Chemical quality of surface waters of South Dakota, with special reference to selenium, boron, and fluoride
AU  - L. R. Petri
PY  - 1958
DO  - 10.3133/ofr5874
UR  - https://pubs.usgs.gov/publication/ofr5874
ID  - ofr5874
ER  -