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- [24] DETERMINATION OF SULFUR IN HEAVY OIL BY X-RAY-FLUORESCENCE SPECTROMETRY FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1980, 303 (05): : 413 - 414
- [27] THE DETERMINATION OF ARSINE IN WORKPLACE AIR BY X-RAY-FLUORESCENCE SPECTROMETRY ANNALS OF OCCUPATIONAL HYGIENE, 1980, 23 (03): : 273 - 282