Breda Ba.15S (OK-WAL) s motorem Walter Junior 4 na Challenge 1932
neznámý (unknown)
1932-09-15
Letectví, Vol. 12. (1932), No. 9 (September), p. 237 - <a rel="nofollow" class="external free" href="https://kramerius.army.cz/search/i.jsp?pid=uuid:af5442b5-5210-11e9-af9a-005056b73ae5">https://kramerius.army.cz/search/i.jsp?pid=uuid:af5442b5-5210-11e9-af9a-005056b73ae5</a>