TY  - RPRT
TI  - The use of standard reference water samples by the U.S. Geological Survey
AU  - L.J. Schroder
AU  - M. J. Fishman
AU  - L.C. Friedman
AU  - G.W. Darlington
PY  - 1980
DO  - 10.3133/ofr80738
UR  - https://pubs.usgs.gov/publication/ofr80738
ID  - ofr80738
ER  -