ISO/TMBG
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 16947 | ISO 9292:1988 | Manganese ores and concentrates — Determination of total iron content — 1,10-Phenanthroline spectrometric method | Standarts spēkā |
| 15791 | ISO 8542:1986 | Manganese and chromium ores — Experimental methods for evaluation of quality variation and methods for checking the precision of sampling | Standarts spēkā |
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