TY  - RPRT
TI  - Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Comparison of a nitric acid in-bottle digestion procedure to other whole-water digestion procedures
AU  - John R. Garbarino
AU  - Gerald L. Hoffman
PY  - 1999
DO  - 10.3133/ofr9994
UR  - https://pubs.usgs.gov/publication/ofr9994
ID  - ofr9994
ER  -