2.192
bewerkingen
Dyna Soar: verschil tussen versies
→Referentie
| Regel 7: | Regel 7: | ||
== Referentie == | == Referentie == | ||
[https://en.wikipedia.org/wiki/Boeing_X-20_Dyna-Soar | [https://en.wikipedia.org/wiki/Boeing_X-20_Dyna-Soar Lemma Boeing X-20 Dyna-Soar, Wikipedia 2015] | ||
== Bron == | == Bron == | ||