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- [7] COULOMETRIC DETERMINATION OF KJELDAHL NITROGEN JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1966, 49 (04): : 865 - &
- [8] SEMIMICRO-KJELDAHL NITROGEN DETERMINATION INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1945, 17 (06): : 397 - 398
- [10] Notes on the determination of nitrogen by the Kjeldahl method JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY-US, 1910, 2 : 463 - 466