TY  - BOOK
AU  - Gamma,Erich
TI  - Design patterns : elements of reusable object-oriented software
T2  - Addison-Wesley professional computing series
SN  - 9789332555402
U1  - 005.12 DES 
PY  - 2016///
CY  - Reading, Mass.
PB  - Addison-Wesley
KW  - Object-oriented programming (Computer science) Computer software Software patterns
ER  -