Letoun Aero A-34 Kos (1929)
neznámý (unknown)
1929-08-01
Letectví, Vol. 9. (1929), No. 8, p. 286 - <a rel="nofollow" class="external free" href="https://kramerius.army.cz/search/i.jsp?pid=uuid:675567ac-51ed-11e9-be64-005056b73ae5">https://kramerius.army.cz/search/i.jsp?pid=uuid:675567ac-51ed-11e9-be64-005056b73ae5</a>