TY  - BOOK
AU  - Gamma, Erich
TI  - Design patterns: Elements of reusable object-oriented software
SN  - 8178081350
U1  - 005.12 GAM/D 
PY  - 1995///
CY  - New Delhi
PB  - Pearson Education
KW  - OBJECT ORIENTED TECHNOLOGY
KW  - PATTERNS
ER  -