SEDIS - Thesaurus
niobium  | |
|---|---|
| BT | metals |
| .niobium | |
| UF | columbium |
| Nb | |
| RT | niobium ores |
| high-field-strength elements | |
| tantalum | |
| SN | Chemical element. Use niobium ores for niobium as a commodity. |
| niobium ores | |
|---|---|
| BT | metal ores |
| .niobium ores | |
| RT | pyrochlore |
| columbite | |
| tantalum ores | |
| niobium | |
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