certa lateral.jpg

Licence: 
Creative Commons Licence
Description: 

after Galeano-Olaya, P.E. & Canal, N.A. 2012

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith