(3GdCMjGA ZjQ GdeNWWI h GfYcGSGJgG GdfaSjI (B-(3GdGLJeGYjI Ydi GdTHGH (B/s - (3HhYfGbI , Ydj s ((3GdLRGFQ (B:s (3OjhGf GdeWHhYGJ GdLGeYjI ,s, 1987)
Keywords: (3GdTHGH s; (3GdfaSjI s; (3GdGLJeGYjI s; (3GdCMjGA GdeNWWI s