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- [5] THE DETERMINATION OF NITROGEN IN THEOBROMINE BY THE KJELDAHL METHOD JOURNAL OF THE AMERICAN PHARMACEUTICAL ASSOCIATION-SCIENTIFIC EDITION, 1945, 34 (09): : 238 - 239
- [7] Notes on the determination of nitrogen by the Kjeldahl method JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY-US, 1910, 2 : 463 - 466
- [8] Uncertainty of nitrogen determination by the Kjeldahl method Accreditation and Quality Assurance, 1999, 4 : 504 - 510