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- [4] Use of boric acid in micro-Kjeldahl determination of nitrogen INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1931, 3 : 0240 - 0242
- [6] DETERMINATION OF ACID AMIDE BY MICRO-KJELDAHL METHOD YAKUGAKU ZASSHI-JOURNAL OF THE PHARMACEUTICAL SOCIETY OF JAPAN, 1951, 71 (07): : 765 - 766
- [9] Accurate and adaptable micro-Kjeldahl method of nitrogen determinations INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1931, 3 : 0239 - 0240