TY  - BOOK
AU  - GAMMA ERICH
AU  - HELM RICHARD
AU  - JOHNSON RALPH
TI  - DESIGN PATTERNS ELEMENTS OF REUSABLE OBJECT-ORIENTED SOFTWARE
SN  - 81-7808-135-0
U1  - 005.133 GAM 
CY  - DELHI
KW  - COMPUTERS
KW  - DESPAT
ER  -