Aero A-30 posádky J. Novák - G. Benesch (1928)
neznámý (unknown)
1928-07-16
Letectví, Vol. VIII. (1928), No. 7, App. 1, p. 6, online: <a rel="nofollow" class="external free" href="https://kramerius.army.cz/search/i.jsp?pid=uuid:a42df039-51e7-11e9-84e4-005056b73ae5">https://kramerius.army.cz/search/i.jsp?pid=uuid:a42df039-51e7-11e9-84e4-005056b73ae5</a>