共 50 条
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- [29] Semimicro- and micro-Kjeldahl steam-distillation unit INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1941, 13 : 0133 - 0133
- [30] A laboratory electric furnace suitable for micro-Kjeldahl digestions and similar uses JOURNAL OF LABORATORY AND CLINICAL MEDICINE, 1936, 21 : 969 - 971