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- [3] CHROMATOGRAPHIC METHOD FOR DETERMINING TRACE WATER AND CARBON-DIOXIDE IMPURITIES IN GASEOUS HELIUM INDUSTRIAL LABORATORY, 1981, 47 (04): : 341 - 342
- [4] GAS-CHROMATOGRAPHIC DETERMINATION OF IMPURITIES IN HELIUM AND HYDROGEN INDUSTRIAL LABORATORY, 1980, 46 (03): : 222 - 225
- [6] SPECTROGRAPHIC DETERMINATION OF TRACE IMPURITIES IN REACTOR GRADE ALUMINUM INDIAN JOURNAL OF TECHNOLOGY, 1975, 13 (10): : 471 - 473