(3OQGSGJ aj JGQjN adSWjf aj GdYUhQ GdhSWi (B/ s - (3HGQJhdO , a(B. (3a s; (3ahRj , YeQ aGQhb s; (3MOGO , YRjR s ((3HZOGO (B: s (3eQcR OQGSGJ GdadSWjfjI , s, 1973)
Keywords: (3adSWjf (B- (3JGQjN s