(3GdedcI aQjOI(B:(3KGFQI Ydi YQT aGQhb (B/ s - (3SejQ aQGLs ([S.N] : (3GdRgQGA ddGYdGe GdYQHi , s, 1991)
Keywords: (3GdYUQ GdMOjKs; (3eUQs; (3JGQjNs