TY  - BOOK
AU  - GAMMA, ERICH
AU  - HELM, RICHARD
TI  - DESIGN PATTERNS ELEMENTS OF REUSABLE OBJECT- ORIENTED SOFTWARE
SN  - 8178081350
U1  - 005.117/GAM/HEL 
PY  - 2004///
CY  - SINGAPORE.
PB  - PEARSON EDUCATION PTE LTD.,SINGAPORE
ER  -