[1] http://www.npri.org/imgLib/20110228_Fed_ed_spending_vs_resul...
[2] https://rogerkerr.files.wordpress.com/2011/03/derugy-column-...
[3] http://www.johnstonsarchive.net/policy/edgraph.html
[1] http://www.npri.org/imgLib/20110228_Fed_ed_spending_vs_resul...
[2] https://rogerkerr.files.wordpress.com/2011/03/derugy-column-...
[3] http://www.johnstonsarchive.net/policy/edgraph.html