共 50 条
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- [2] TOTAL NITROGEN IN FERTILIZER - COLLABORATIVE STUDY JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1978, 61 (02): : 299 - 306
- [5] DETERMINATION OF TOTAL NITROGEN INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1945, 17 (11): : 746 - 746
- [8] The determination of total nitrogen including nitric nitrogen JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY-US, 1919, 11 (05): : 306 - 311