(3GdGjhHjhf aj TeGd GdTGe hGdLRjQI (B564(3g(B-648(3e(B/1168-1250(3e(B:s - (3GdJcQjJj ,eMehO jGSjf GMeOs ((3HjQhJ (B:s (3OGQ GdNdhO ,s, 1981)
Keywords: (3GdOhdI GdGjhHjI s