(3GdJUQa GdbGfhfj aj GdCYVGA GdHTQjI (B/ s - (3GdaUd, efPQs ((3YeGf (B:s (3ecJHI GdKbGaI ddfTQ hGdJhRjY,s, 1992)
Keywords: (3GdbGfhfs; (3GdbGfhf GdWHjs; (3bGfhf fbd GdGYVGA GdHTQjIs