Ordnance Survey anglès, una mica com aquí ? <a href="http://www.maproomblog.com/2011/03/the_ordnance_survey_and_the_private_sector.php">http://www.maproomblog.com/2011/03/the_ordnance_survey_and_the_private_sector.php </a><br>
<br>Raf<br>