(3GdhYi hGdaf (B( (3YGde GdeYQaI (B146 ) / s - (3SYO eUdhMs; (3fhad djJhas; (3ZGJTa, ZjhQZis ((3GdchjJ (B: s (3GdeLdS GdhWfi ddKbGaI hGdafhf hGdGOGH , s, 1990)
Keywords: (3GdadSaIs; (3Gdafs; (3JGQjN hfbOs