TY  - BOOK
AU  - Gamma, Erich, Helm, Richard, Johnson, Ralph
TI  - Design patterns, elements of reusable object-oriented software
SN  - 0201633612
U1  - 005.12 GAM 
PY  - 1995///
CY  - NEW YORK
PB  - ADDISON WESLEY PUBLISHER
ER  -