Urazbekov, A.U. Continuity in ethics. David the invincible and Alfarabi / A.U. Urazbekov ; Academy of Sciences of Armenian SSR. - Yerevan : [Academy of Sciences of Armenian SSR], 1980. - 13 p. ; 20 cm. - 14 (47.925)(092) David the invincible (NLA) . Subjects--Personal Names: David, the Invincible Al-Farabi, c. 872 - c. 950 Subjects--Topical Terms: EthicsMoral teaching Universal Decimal Class. No.: 14 (47.925)(092) David the invincible (NLA)