elite series U-boat crews : 1914-45 / Gordon Williamson ; ill. by D. Pavlovic Heraldry in war : formation badges, 1939-1945 / collected and illustrated by Lieut.-Colonel Howard N. Cole, O.B.E Nazi-emblemen / E.W.W. Fowler ; [Ned. vert. en bew. J.C. Terweijden]
