Verma, Dinesh <br/><br/>
Elements of system analysis and design 

 - 1st 
 - Gully Baba Publishing  House  Delhi  2011 
 - 324p. 
<br/><br/> 60241 
<br/><br/><label>ISBN: </label>8189086367  160 
<br/><br/><label>Dewey Class. No.: </label>004.21 VER-E