Berkov, V.F. <br/><br/>
David the Invincible on the Methods of Cognition / 
V.F. Berkov; Academy of Sciences of Armenian SSR. 
 - Yerevan :  S. n.,  1980. 
 - 12 p. ;  20 cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>David the Invincible
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy