(3JGQjN GdHUQhj (B:s (3UaMGJ eLghdI ef JGQjN OeTb aj YUQ GdeeGdjc (B/s - (3GdHUQhj, Ydj Hf jhSa Hf Ydj,s 842-905 (3g`(B.s; (3GdYdHj, CcQe MSfs ((3OeTb (B:s (3OGQ GdeCehf ddJQGK,s, 1988)
Keywords: (3GdeeGdjcs -- (3JGQjNs; (3OeTb (B((3ShQjG(B)s -- (3JGQjNs; (3ShQjGs -- (3JGQjNs