TY  - BOOK
AU  - Gamma,Erich
AU  - Helm,Richard
AU  - Johnson,Ralph
AU  - Vlissides,John
TI  - Design patterns: elements of reusable object-oriented software 
SN  - 9789332555402
AV  - QA76.64 DES
PY  - 2017///
CY  - Chennai
PB  - Pearson education
KW  - Object-oriented programming (Computer science)
KW  - Computer software
KW  - Reusability
N1  - Includes bibliographical references  and index
ER  -