Wikidata entity: Q748254

| P279 | subclass of | ... | Q11402 (force) | force |
| P279 | subclass of | ... | Q2583685 (propulsion) | propulsion |
| P646 | Freebase ID | /m/027wmw |
| P6366 | Microsoft Academic ID (discontinued) | 2776813460 |
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log id: 6080083