iba informationen Fort Eben-Emael / Günther Schalich vliegtuigen in gevecht B-17 Flying Fortresses van de achtste luchtvloot / [Martin Bowman] ; [vert. ILC Taleninstituut] fortress German V-weapon sites 1943-45 / Steven J. Zaloga ; ill.by Hugh Johnson & Chris Taylor Fortress Europe / by the editors of Time-Life books hitler's forces Afrika Korps at war : vol. 2 The long road back / George Forty Afrika Korps at war / George Forty st Luchtdoelbatterij op fort Dirksz. Admiraal : onderdeel van de Atlantikwall in Den Helder / Jan Lugtmeijer st vestingbouwkundige wandeling langs bunkers van de Atlantikwall in het zuidwestelijke deel van Festung IJmuiden / tekst Hans Sakkers ; tek. Marc Machielse Hitler's fortresses ; German fortifications and defences 1939-45 / edited by Chris McNab ; index by Sharon Redmayne ; cartography by Boundford and The Map … German fortifications in Jersey / written by Michael Ginns and Peter Bryans ; artwork and design Colin Partridge and Stan Sloan G.E.C. radio engineering and the war effort : its contribution to victory fighting forces series Japan and the Japanese : a military power we must defeat, a Pacific problem we must solve / by the editors of Fortune