published on: 2012-03-20 02:07:54
found this from one of my old sets :)
Crayons with labels showing the chemicals used to make up the
ellexxx.tumblr.com/post/19653452143/
ellexxx.tumblr.com/post/19653603643/
ellexxx.tumblr.com/post/19660556719/
mochacafe: via ohsopictures