TY  - RPRT
TI  - Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Evaluation of alkaline persulfate digestion as an alternative to Kjeldahl digestion for determination of total and dissolved nitrogen and phosphorus in water
AU  - Charles J. Patton
AU  - Jennifer R. Kryskalla
PY  - 2003
DO  - 10.3133/wri034174
UR  - https://pubs.usgs.gov/publication/wri034174
ID  - wri034174
ER  -