TY  - RPRT
TI  - New standard operating procedures and quality-control practices for the U.S. Geological Survey National Field Quality Assurance Program since January 1994
AU  - Daniel L. Stanley
PY  - 1996
DO  - 10.3133/ofr96130
UR  - https://pubs.usgs.gov/publication/ofr96130
ID  - ofr96130
ER  -