Brice, Martin Hubert frey50
Forts and fortresses: From the hillforts of prehistory to modern times - the definitive visual account of the science of fortification - New York Facts on File 1990 - 192 p.
0-8160-2238-0
Fortification - History
Siege warfare - History
355.709 Bri 9
Forts and fortresses: From the hillforts of prehistory to modern times - the definitive visual account of the science of fortification - New York Facts on File 1990 - 192 p.
0-8160-2238-0
Fortification - History
Siege warfare - History
355.709 Bri 9