TY  - BOOK
AU  - Gamma, Erich ...[et al.]
TI  - Design patterns: elements of reusable object-oriented software
SN  - 9788131700075
U1  - 005.12 
PY  - 1995///-R2010
CY  - New Delhi
PB  - Pearson
N1  - includes bibliographical references and index
ER  -