TY  - RPRT
TI  - Summary of the U.S. Geological Survey National Field Quality Assurance Program from 1979 through 1997
AU  - D.L. Stanley
AU  - T.M. Boozer
AU  - L.J. Schroder
PY  - 1998
DO  - 10.3133/ofr98392
UR  - https://pubs.usgs.gov/publication/ofr98392
ID  - ofr98392
ER  -