Great lot of 3 books on ancient and medieval technology! Development, use and more! With the way the world is going we might need this information again sometime soon! The Technical Arts and Sciences of the Ancients, hard cover by Albert Neuburger, translation published in 1930, with 518 pages and includes a thin folded booklet (Laws of Motion in Medieval Physics). Blast-Power and Ballistics, concepts of force and energy in the ancient world, hard cover with jacket by Jack Lindsay, 2009 with 510 pages. The Ancient Engineers, hard cover with jacket by L Sprague De Camp, 1993 with 408 pages. These include information on milling, glass works, ceramics, weapons of war, and much, much more!