TY  - BOOK
AU  - Gamma, Erich. Helm, Richard. Johnson, Ralph...[et al.]
TI  - Design patterns : elements of reusable object-oriented software
SN  - 9788131700075
U1  - 001.6424  GAM;17 
PY  - 1995///
CY  - New Delhi
PB  - Dorling Kindersley
KW  - patterns,reusable,object-oriented,software
ER  -