TY  - BOOK
AU  - Gamma , Erich
AU  - Helm , Richard
AU  - Johnson , Ralph
AU  - Vlissides , John
TI  - Design patterns: Elements of reusable object-oriented software
SN  - 8178081350
U1  - 005.12 
CY  - New Delhi
PB  - Pearson Education
KW  - Computer Software
KW  - Software Patterns
KW  - Object Oriented Programming
KW  - Computer Sciences
ER  -