Gamma, Erich. <br/><br/>
Design patterns:Elements of reusable object - oriented software 
Erich Gamma 
 - Delhi  Pearson Education  2002 
 - xv, 395p. 
<br/><br/><label>ISBN: </label>9 788178 081359 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Object - oriented programming
<br/><br/><label>Dewey Class. No.: </label>004.420 GAM