TY  - BOOK
AU  - Wirfs-Brock, Rebecca, Wilkerson, Brian & Wiener, Lauren
TI  - Designing object-orented software
SN  - 978-81-203-1050-6
U1  - 001.642 Wir 
PY  - 2007///
CY  - PHI Learning Pvt Ltd., New Delhi
ER  -