Wikidata entity: Q1854358
| P373 | Commons category | String | Hydrogen technologies | ??? |
| P935 | Commons gallery | String | Hydrogen technologies | ??? |
| P1552 | has characteristic | ... | Q556 (hydrogen) | hydrogen |
| P279 | subclass of | ... | Q11016 (technology) | technology |
| P910 | topic's main category | ... | Q8529493 (Category:Hydrogen technologies) | Category:Hydrogen technologies |
| P5437 | EuroVoc ID | 2716 |
| P646 | Freebase ID | /m/0118b2cw |
| P6366 | Microsoft Academic ID (discontinued) | 542482507 |
| P691 | NL CR AUT ID | ph465308 |
| P10283 | OpenAlex ID | C542482507 |
| P3911 | STW Thesaurus for Economics ID | 14634-3 |
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