3-view drawing of Czechoslovak fighter biplane <a href="https://en.wikipedia.org/wiki/Avia_B-534" class="extiw" title="w:Avia B-534">Avia B-534</a>.
<a href="//commons.wikimedia.org/wiki/User:MLWatts" title="User:MLWatts">MLWatts</a>
2014-06-04 18:17:02
<span class="int-own-work" lang="en">Own work</span>