(3GdbGehS GdYLjH (B((3eY TGTJg GdMeQGA(B) / s - (3ecJHI dHfGfs ([S.N] : (3ecJHI dHfGf , s, 1991)
Keywords: (3GdGWaGds; (3GddZI GdYQHjIs; (3GdeYGLes