(3GdWQjb Edi GdWQjbI (B/ s - (3MSjf, LeGd fUGQs; (3aJhMj, dDjs ((3YeGf (B:s (3GdCgdjg ddfTQ hGdJhRjY,s, 1997)
Keywords: (3GdJUha GdESdGejs; (3GdUhajIs; (3GdRgOs