TY  - BOOK
AU  - Wirfs-Brock,Rebecca
AU  - McKean,Alan
TI  - Object design: roles, responsibilities, and collaborations 
SN  - 9780201379433
U1  - 005.117 
PY  - 2003///
CY  - Boston, Mass.
PB  - Addison-Wesley
KW  - Computer science
N1  - Includes bibliographical references and index
ER  -