Mandeep Kumar <br/><br/>
Design and development of color based captcha 
Mandeep Kumar 
 - Dr. B.R. A 
 - Jalandhar  Dr. B.R. Ambedkar National Institute of  2013 
 - x; 57p 
<br/><br/><label>Dewey Class. No.: </label>5.8  / MA-D