Dobová reklama na Walter Mercury (1931)
neznámý (unknown)
1931-09-15
Letectví, Vol. XI. (1931), No. 9, p. 332, <a rel="nofollow" class="external free" href="https://kramerius.army.cz/search/i.jsp?pid=uuid:8d7084b5-520b-11e9-94e9-005056b73ae5">https://kramerius.army.cz/search/i.jsp?pid=uuid:8d7084b5-520b-11e9-94e9-005056b73ae5</a>