Reference
Reimer, Kylie, "Quadrats- Population Density", Retrieved from website April 28, 2013, http://www.youtube.com/watch?v=lnpUdFniB9Y
Veganic Agricultural network, 2011, "Forest Gardening in a Nutshell", Retrieved from website April 21, 2013, http://www.goveganic.net/article157.html
Veganic Agricultural network, 2011, "Forest Gardening in a Nutshell", Retrieved from website April 21, 2013, http://www.goveganic.net/article157.html