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- [3] KJELDAHL DETERMINATION OF NITROGEN - ELIMINATION OF THE DISTILLATION INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1946, 18 (11): : 709 - 710
- [5] SPECTROPHOTOMETRIC DETERMINATION OF NITROGEN IN ORGANOSILICON COMPOUNDS BY KJELDAHL METHOD WITHOUT AMMONIA DISTILLATION ZHURNAL ANALITICHESKOI KHIMII, 1973, 28 (05): : 1025 - 1027