TY  - RPRT
TI  - Guidelines for preparing a quality assurance plan for district offices of the U.S. Geological Survey
AU  - L.J. Schroder
AU  - W. J. Shampine
PY  - 1992
DO  - 10.3133/ofr92136
UR  - https://pubs.usgs.gov/publication/ofr92136
ID  - ofr92136
ER  -