TY  - BOOK
AU  - Gamma, Erich  .
TI  - Design Patterns elements of reusable object-oriented software / 
SN  - 81-7808-135-0
U1  - BV 
PY  - 2003///
CY  - Delhi : 
PB  - Pearson Education(Singapore) Pte. Ltd. , 
KW  - Computer science
ER  -