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- [6] DETERMINATION OF SULPHATES BY REDUCTION WITH ELEMENTAL SULPHUR ZHURNAL ANALITICHESKOI KHIMII, 1970, 25 (10): : 1982 - &
- [7] The determination of sulphur in pyrite and other sulphides ZEITSCHRIFT FUR ANORGANISCHE CHEMIE, 1913, 83 (01): : 27 - 32
- [8] COMPLEXOMETRIC DETERMINATION OF SULPHUR IN PYRITES AND SULPHIDES FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE, 1964, 203 (01): : 14 - 16