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- [7] Use of steam for Kjeldahl distillation of nitrogen INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1931, 3 : 0160 - 0161
- [8] SPECTROPHOTOMETRIC DETERMINATION OF NITROGEN IN ORGANOSILICON COMPOUNDS BY KJELDAHL METHOD WITHOUT AMMONIA DISTILLATION ZHURNAL ANALITICHESKOI KHIMII, 1973, 28 (05): : 1025 - 1027