(3gOGjI GdMjGQi aj CLhHI GdjghO h GdfUGQi (B/ s - (3EHf bje GdLhRjg, TeS GdOjf CHh YHO Gddg eMeOs; (3CHh GdYHGS, eMeO Ydjs ((3GdbGgQg (B:s (3ecJHI GdbQBf ddWHY h GdfTQ h GdJhRjY,s, 1990)
Keywords: (3GdESdGes; (3OaY GdeWGYf Yf GdESdGes; (3GdYdhe GdESdGejIs; (3GdSjQI GdfHhjIs