TY  - BOOK
AU  - Erich Gamma
AU  - John  VlissidesRalph  JohnsonRichard  Helm
TI  - Design Patterns
SN  - 8178081350
SN  - 7595
PY  - 2004///
CY  - New Delhi
PB  - Pearson Education Asia Pte. Ltd.
ER  -