Publication 4219, 1909, L'existence du ballon libre
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| Original title | L'existence du ballon libre |
|---|---|
| Simple title | The existence of the free balloon |
| Authors | |
| Date | 1909 |
| Countries | BE |
| Languages | fr |
| Keywords | free balloons, balloons |
| Journal | La Conq. l'Air |
| Related to aircraft? | 1 |
| Page count | 1 |
| Word count | |
| Wikidata id |
Sources
- Brockett 1910, page 291, entry 4219: Existence (L') du ballon libre. La Conq, l'Air, 6e année, No. 3 (fév. 1909), Bruxelles, p. 5. S (4219
