Useful Links

http://userwww.sfsu.edu/~biol240/labs/lab_17hydrostaticsk/pages/planaria.html

http://userwww.sfsu.edu/~biol240/labs/lab_17hydrostaticsk/pages/flatworms.html

http://devbio.umesci.maine.edu/styler/globalworming/platyhelm.htm

http://www.waterwereld.nu/images/flatworm.gif