World War II. Prologue U.S.A. Gezworen kameraden : roman / Leon Uris ; vert. [uit het Amerikaans] door H.C.E. de Wit-Boonacker wereldmacht van het Witte Huis : de geheime documenten van Harry Hopkins, Roosevelts rechterhand / [door] Robert E. Sherwood ; geautoriseerde vert. van B. Koning Service of the piece 105-mm Howitzer, M 2, truck-drawn - USA Field Artillery Field Manual, FM 6-75 Service of the piece 8-inch Howitzer M 1 - USA Field Artillery Field Manual, FM 6-91 Service of the piece : 105-MM howitzer self-propelled - USA Armored Force Field Manual, FM 17-63 Materiel instruction memorandum : The Firing Battery 155mm Howitzer M1 Materiel instruction memorandum : The Firing Battery 105mm Howitzer M2 Materiel instruction memorandum : 75mm Pack Howitzer, M-1 Materiel instruction memorandum : The Firing Battery 75mm Pack Howitzer, M-1