ISBN 1580970621 books & textbook
The Medieval Fortress: Castles, Forts and Walled Cities of the Middle Ages
Kaufmann, J.E. Kaufmann, H.W. Jurga, Robert M. Kaufmann, H. W.
Da Capo Press /2001-05T Hardcover / 320 Pages
isbn-10: 1580970621 / isbn-13: 9781580970624
