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- [2] Determination of ammoniacal and nitrate nitrogen in decomposed plant material INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1941, 13 : 0187 - 0188
- [3] EVALUATION OF SOME METHODS OF NITRATE NITROGEN DETERMINATION IN PLANT MATERIAL CHEMICKE LISTY, 1976, 70 (05): : 513 - 524
- [9] DETERMINATION OF TOTAL NITROGEN IN MATERIALS CONTAINING NITRATE - REDUCTION BY CHROMOUS ION JOURNAL OF THE ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS, 1960, 43 (03): : 468 - 472