ISBN 9780977649709 books & textbook
Catapult Design, Construction And Competition With the Projectile Throwing Engines of the Ancients
Toms, Ron L. Barcio, Bernard F. Payne-Gallwey, Ralph
Rlt Industries /2006-01-01 Paperback / 180 Pages
isbn-10: 0977649709 / isbn-13: 9780977649709
