Amerikaans kanon M2 155 mm 'Long Tom' op affuit M1 Exercitiehandgranaat (werpgewicht), Nederlands model NR 1 Luchtdoelkanon Nederlands model 40 L 70G, kaliber 40 x 364 R Amerikaans Multiple Launch Rocket System MLRS raketlanceersysteem M270, kaliber 277 mm case for the UFO : unidentified flying objects / M.K. Jessup Soviet Militairy Space Doctrine Space weapons : a handbook of military astronautics / ed. by James H. Straubel ... [et al.] German rearmament and atomic war : the views of German military and political leaders / Hans Speier Inside the space ships / by George Adamski ; foreword by Desmond Leslie Berling - fate and mission / [text by Hans E. Hirschfeld, Rudolf Kettlein, Wolfgang Kruse ; ill. by Helen Brun ; transl.: Eva Killy ; … Flying saucers / Donald H. Menzel Behind the flying saucers / F. Scully