Beneš-Mráz Be-51 Beta-Minor (Raduno del Littorio 1937)
neznámý (unknown)
1937-09-15
Letectví, Vol. XVII. (1937), No. 9 (September), p. <a rel="nofollow" class="external free" href="https://kramerius.army.cz/search/i.jsp?pid=uuid:e5d80ff3-5f08-11e9-9f40-005056b73ae5">https://kramerius.army.cz/search/i.jsp?pid=uuid:e5d80ff3-5f08-11e9-9f40-005056b73ae5</a>