rpf_sources

http://www.thingsmagazine.net/text/t14/rabbits.htm
http://pandora.nla.gov.au/pan/43156/20040709-0000/agspsrv34.agric.wa.gov.au/programs/app/barrier/history.htm
http://www.rabbitfreeaustralia.org.au/assets/fenner103112.pdf
http://www.heritageaustralia.com.au/pdfs/Heritage%200306_Rabbits.pdf
camelfarm.com/camels/rabbit_proof_fence.html
http://en.wikipedia.org/wiki/Rabbit-proof_fence