TY  - BOOK
AU  - Hogg, Ian V.,
CN  - UG401
CN  - UG401
CY  - New York :
DA  - 1985, c1981.
ID  - 243430
KW  - Fortification
PB  - Crescent Books,
PP  - New York :
PY  - 1985, c1981.
SN  - 0517480786
T1  - The history of forts & castles /
TI  - The history of forts & castles /
ER  -