Un llibre sobre com visualitzar espacialment estructures socials <a href="http://www.guardian.co.uk/news/datablog/2012/jul/24/danny-dorling-visualise-social-structure">http://www.guardian.co.uk/news/datablog/2012/jul/24/danny-dorling-visualise-social-structure</a><br>
<br>Raf<br>