TY  - BOOK
AU  - Duffy Christopher
TI  - Siege warfare :  The fortress in the early modern world 1494-1660
U1  - MV4xM93, L9 
PY  - 1979///
CY  - London
PB  - Routledge and Kegan Paul    
KW  - INDUSTRIAL ARTS
N1  - Bibliography - 265-76
ER  -