(3GdRghQ GdbGJdI (B((3TQGFW ajOjh(B) / s - (3Jhajb MeRIs ((3GdbGgQI (B: s (3TQcI GdLPhQ SfJQ , s, 1980)
Keywords: (3GdGadGe GdYQHjIs; (3GdGadGe GdGLJeGYjIs; (3GdajOjh, CTQWIs; (3GdJSLjdGJ GdeQFjIs