(3GdJaSjQ hGdeaSQhf (B:s (3HMK JaUjdi Yf fTCI GdJaSjQ hJWhQg (B. (3hCdhGf hePGgHg (B. (3eY YQV TGed dCTgQ GdeaSQjf (B. (3hJMdjd cGed dGge cJH GdJaSjQ ef YUQ GdfHi Udi Gddg Ydjg hSde Edi YUQfG GdMGVQ(B.s (3GdLRA GdChd (B/s - (3eMeO MSjf GdPgHis ((3GdbGgQI (B:s (3ecJHI hgHg,s, 1989)
(3GdfU HGddZI GdYQHjIs
Keywords: (3JaSjQ GdbQBfs; (3GdTQjYI GdESdGejIs