(3GdbGgQI (B1830 (10 (3ObGFb(B) / s - (3SejQ Yha (B((3GNQGL(B)s; (3fSje hfjSs ([S.N] : (3GdeQcR Gdbhei ddSjfeG , s, 1969)
Keywords: (3TQGFW ajOjhs; (3GadGe JSLjdjIs