Welch, Robert B, b.1941, <br/><br/>
Perceptual modification :  adapting to altered sensory environments / 
Robert B. Welch. 
 - New York :  Academic Press,  1978. 
 - xv, 346 pages ;  24 cm. 
 - Series in cognition and perception .
<br/><br/> Includes indexes 
<br/><br/><label>ISBN: </label>0127418504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Perception.<br/>Perceptual--Motor learning.<br/>Optical illusions.