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- [4] DETERMINATION OF TUNGSTEN WITH PYROCATECHOL VIOLET AND LOBELINE BY THE EXTRACTION-SPECTROPHOTOMETRIC METHOD CHEMIA ANALITYCZNA, 1982, 27 (5-6): : 411 - 415
- [7] EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF COBALT IN SOILS AND PLANTS USING TETRAZOLIUM VIOLET CHEMIA ANALITYCZNA, 1994, 39 (05): : 639 - 643
- [10] Spectrophotometric and extraction-spectrophotometric Determination of selenium CHEMICKE LISTY, 1998, 92 (09): : 729 - 734