(3EHOGYGJ bUUjI (B: s (3ef EHOGYGJ bUGUj fGOj CSQI Gdbde GdKbGaj (B/ s ((3GdRQbGA (B:s (3fGOj CSQI Gdbde,s, 1997)
Keywords: (3GdCOH GdYQHjs; (3GdbUU GdYQHjIs