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- [3] CONCENTRATION OF IMPURITIES IN EMISSION SPECTROGRAPHIC ANALYSIS JOURNAL OF ANALYTICAL CHEMISTRY OF THE USSR, 1979, 34 (05): : 763 - 769
- [4] DETERMINATION OF IMPURITIES IN FERRONIOBIUM BY SPECTROGRAPHIC ANALYSIS INDUSTRIAL LABORATORY, 1958, 24 (12): : 1616 - 1617
- [5] SPECTROGRAPHIC METHOD FOR QUANTITATIVE-DETERMINATIONS OF 28 IMPURITIES IN REFINED RUTHENIUM AND IRIDIUM ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1979, (SEP): : 77 - 77
- [6] EFFECT OF HALIDE CARRIERS IN SPECTROGRAPHIC EXAMINATION OF TRACE IMPURITIES IN COPPER SPECTROCHIMICA ACTA, 1965, 21 (12): : 2051 - &
- [7] The spectrographic detection and estimation of minute quantities of impurities in copper. JOURNAL OF THE INSTITUTE OF METALS, 1934, 55 : 275 - 281
- [8] THE DETERMINATION OF IMPURITIES IN HAFNIUM BY EMISSION SPECTROGRAPHIC ANALYSIS SPECTROCHIMICA ACTA, 1959, 15 (3-4): : 293 - 293