(3fXe GdbSe GdYGe ai bGfhf GdYbhHGJ GdeUQi (B/ s - (3LdGd KQhJs ([S.N] : (3ecJHg GdfgVg GdeUQjg , s, 1989)
Keywords: (3GdbGfhfs; (3bGfhf GdYbhHGJs