00942nam 2200169z- 450 9910696846003321(CKB)5470000002382422(EXLCZ)99547000000238242220230503cuuuuuuuu -u- -engMethods 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 waterDenver, ColoMethods of analysis by the U.S. Geological Survey National Water Quality Laboratory BOOK9910696846003321Methods 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 water3177900UNINA