TY  - BOOK
AU  - Bull, Dr Stephen
TI  - World War 1 Trench Warfare (2) 1916-18
T2  - Elite
SN  - 99338967
U1  - 940.4 
PY  - 2002///
PB  - Osprey Publishing
KW  - World War 1 - - Military operations
KW  - Trench warfare
KW  - History
ER  -