TY  - BOOK
AU  - Helm,Richard
AU  - Johnson,Ralph
AU  - Vlissides,John
TI  - Design patterns: elements of reusable object-oriented software 
SN  - 0201633612 (acidfree paper)
U1  - 005.12 22
PY  - 2018///, ©2016
CY  - New Delhi
PB  - Pearson
KW  - Object-oriented programming (Computer science)
KW  - Computer software
KW  - Reusability
KW  - Software patterns
N1  - Includes bibliographical references and index
ER  -