Erich Gamma,Richard Helm, Ralph Johnson and John Vlissides <br/><br/>
Design Patterns :Elements of Reusable Object -Oriented Software 

 - Delhi,  Pearson Education,  2002 
 - 395p. 
<br/><br/><label>ISBN: </label>9788178081359 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>GAM