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- [23] A SPECTROGRAPHIC METHOD FOR DETERMINING IMPURITIES IN HIGH-PURITY CARBONS AND GRAPHITES INDUSTRIAL LABORATORY, 1959, 25 (08): : 998 - 999
- [25] MEASUREMENT OF TRACE IMPURITIES IN HIGH-PURITY MATERIALS JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, 1995, 191 (01): : 75 - 82