HirstRJ <br/><br/>
Perception and the external world/ 
R.J.Hirst. 
 - London:  Collier- Macmillan limited,  1965. 
 - 310p.  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge Theory of
<br/><br/><label>LC Class. No.: </label>BD143