Fortification -- Bélidor (Bernard Forest de): La Science des Ingénieurs dans la Conduite des Travaux de Fortification et d'Architecture Civille, 4to, Paris, chez Claude Jombert, 1729 [Sotheran Supplement, 6678], engraved additional title and 53 plates all but two folding (library stamp at foot of title, slight crinkling of early leaves), contemporary calf, spine gilt (extremities rubbed, lower cover with small piece of leather torn away).