Sources

-Biology by Miller Levine book
-http://www.biology.iastate.edu/Courses/201L/Annelida/%20AnnelINDX.htm
-http://www.esu.edu/~milewski/intro_biol_two/lab__12_annel_arthro/Annelida.html
-http://www.kn.att.com/wired/fil/pages/listannelidama.html
-http://www.blobs.org/science/diffusion/imgs/diffusion2.gif
-http://sps.k12.ar.us/massengale/unsegmented_worm_notes_b1.htm
-http://infusion.allconet.org/webquest/annelida.html
-http://www.amonline.net.au/factsheets/leeches.htm
-http://www.ento.csiro.au/education/allies/annelida.html
-http://tolweb.org/Annelida