Graham, Norma Van Sundaram. <br/><br/>
Visual pattern analyzers   
by Norma Van Surdam Graham 
 - New York  Oxford University Press  1989 
 - xvi, 646p. 
 - Oxford Psychology series  No 16 .
<br/><br/><label>ISBN: </label>0195151548 
<br/><br/><label>Dewey Class. No.: </label>152.1423  / N89