TY  - RPRT
TI  - 1980 water quality laboratory services catalog
AU  - L.C. Friedman
AU  - W.A. Beetem
PY  - 1979
DO  - 10.3133/ofr79697
UR  - https://pubs.usgs.gov/publication/ofr79697
ID  - ofr79697
ER  -