Held, Richard; Richards, Whitman <br/><br/>
Perception: Mechanisms and models / 
Held, Richard; Richards, Whitman 
 -  W H Freeman & Co., San Francisco,  1972 
 - p. ;  22 cm. 
<br/><br/><label>ISBN: </label>0716708531 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Perceptual processes; Psychology
<br/><br/><label>Dewey Class. No.: </label>153.7 HEL-P