anti aircraft gun 10,5-cm flak 38
US Army
1943-07-25
Tactical and technical trends (<a rel="nofollow" class="external free" href="https://archive.org/stream/TacticalAndTechnicalTrendsNos21-30#page/n503/mode/2up">https://archive.org/stream/TacticalAndTechnicalTrendsNos21-30#page/n503/mode/2up</a>)