Com és el treball de gabinet a l&#39;OS <a href="http://blog.ordnancesurvey.co.uk/2011/02/focus-on-cartography-%E2%80%93-part-one/">http://blog.ordnancesurvey.co.uk/2011/02/focus-on-cartography-%E2%80%93-part-one/</a><br><br>
Raf<br>