(3GfUGQ GdMSjf (B: s (3OQGSI Yf TgOGA KhQI GdMSjf (B: (3GdQLGd hGdOdGdGJ (B/ s - (3TeS GdOjf (B: (3eMeO egOjs ((3HjQhJ (B: s (3GdOGQ GdGSdGejI (B: s, 1981)
(3jTJed Ydi GQLGYGJ HHdjhLQGajIs
Keywords: (3GdMSjf Hf Ydi (B: s -- - 680; (3GdGSdGes -- (3JQGLes; (3Ggd HjJ GdQShd Udi Gddg Ydjg hSdes