Army air mobility futuristic concept 1965
U.S. Army
1965
<a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/imgsrv/download/pdf?id=uc1.c2790782;orient=0;size=50;seq=324;attachment=0">Defense Industry Bulletin</a>, November 1965, Page 2