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- [6] COLORIMETRIC DETERMINATION OF COPPER IN ALUMINUM ALLOYS INDUSTRIAL AND ENGINEERING CHEMISTRY-ANALYTICAL EDITION, 1945, 17 (07): : 422 - 424
- [7] COLORIMETRIC DETERMINATION OF SILVER IN COPPER AMALGAMS INDUSTRIAL LABORATORY, 1991, 57 (09): : 886 - 888
- [8] COLORIMETRIC DETERMINATION OF COPPER IN ALUMINIUM ALLOYS JOURNAL OF APPLIED CHEMISTRY, 1951, 1 (08): : 354 - 355