Mechanical traction in war / Otfried Layriz ; transl. by R.B. Marston ; [with a new introduction by W.J. Hughes] perma book Crusade in Europe / Dwight D. Eisenhower Institutions Militaires de Vegece. De Letter A. B. en C. D-F. G-I. K-M. N-R. S-Z. Tome Troizieme. Tome Quatrieme.
