technical regulations Fortification : field fortification for artillery / prepared under direction of the Chief of Engineers Agricultural engineering / prep. by the National roster of scientific and specialized personnel Civil engineering / prep. by the National roster of scientific and specialized personnel Manual of field engineering (Royal Engineers) : Bridging and watermanship power behind their wings : an account of the part played by the Bristol Aeroplane Company in the development of the air-cooled radial aero-engine in … Instruction in military engineering : Field defences / School of military engineering Instruction in military engineering : Military mining / School of military engineering Safety requirements for excavation, building, construction / War department, Corps of Engineers U.S. Army training regulations Corps of engineers / War Department Military engineering : (technical training) Military engineering : Bridging / Army Council Military engineering : Water supply / Army Council