Emberley, Ed. <br/><br/>
The wizard of op /  
Ed Emberley. 
 - 1st ed. 
 - Canada :  Little Brown,  1975. 
 - Unnumbered pages. ;  ill, ;  23 cm.  
<br/><br/>92  92 
<br/><br/><label>ISBN: </label>0-316-23610-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optical arts.
<br/><br/><label>Dewey Class. No.: </label>702.8 / E14w