404. That’s an error.

The requested URL /bookmarks/mark?op=edit&bkmk=http%3A%2F%2Fdata.bnf.fr%2F11974005%2Ffrance_direction_de_la_surveillance_du_territoire%2F&title=France.+Direction+de+la+surveillance+du+territoire was not found on this server. That’s all we know.