TY  - RPRT
TI  - Quality assurance practices for the chemical and biological analyses of water and fluvial sediments
AU  - Linda C. Friedman
AU  - David E. Erdman
PY  - 1981
DO  - 10.3133/ofr81650
UR  - https://pubs.usgs.gov/publication/ofr81650
ID  - ofr81650
ER  -