TY  - RPRT
TI  - Results from laboratory and field testing of nitrate measuring spectrophotometers
AU  - Teri T. Snazelle
PY  - 2015
DO  - 10.3133/ofr20151065
UR  - https://pubs.usgs.gov/publication/ofr20151065
ID  - ofr20151065
ER  -