(3ehGba (B: s (3JGQjN h SjGSI (B: (3fHPI aj GdKhQI GdaQfSjI (B: (3GdfcHGJ (B- (3GdJWQa (B- (3h GdEUdGM (B/ s - (3GdQjMGfj, Cejfs ((3HjQhJ (B:s (3OGQ GdLjd,s, 1991)
Keywords: (3JGQjN aQfSGs; (3aQfSGs; (3GdKhQI GdaQfSjIs; (3GdSjGOIs; (3GdMQHs; (3GdfcHGJs