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- [22] AMMONIA-SELECTIVE ELECTRODE DETERMINATION OF NITROGEN IN FERTILIZERS JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1981, 64 (05): : 1096 - 1099
- [26] DETERMINATION OF AMMONIACAL NITROGEN IN PRESENCE OF UREA WITH AN AMMONIA ELECTRODE JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1973, 56 (02): : 373 - 374