TY  - BOOK
AU  - Erich Gamma, et. al.
TI  - Design Patterns Elements of Reusable Object-Oriented Software
SN  - 978-81-317-0007-5
U1  - 005.117 
PY  - 1995///
CY  - Noida
PB  - publisher
KW  - COMPUTER
ER  -