(3CaZGfSJGf(B: (3bHd GdaJM GdESdGej h aj CjGeg (B/ s - (3NWGH, eMehO TjJs ((3OeTb (B:s (3OGQ bJHjI,s, 1990)
Keywords: (3CaZGfSJGfs; (3GdaJhMGJ GdESdGejIs; (3GdHdOGf GdESdGejIs