Coccidia
   Causes, symptoms, and treatment.
   http://www.case-agworld.com/cAw.LUcocc.html

Control of Internal Parasites in Sheep
   Things to keep in mind when developing an effective parasite control program. (Virginia)
   http://www.ext.vt.edu/news/periodicals/livestock/aps-98_05/aps-913.html

Controlling Internal Parasites in Sheep
   To effectively control internal parasites at a reasonable cost, one needs to understand the interaction between the worms and sheep, have knowledge of the parasite life cycle and use dewormers and other management practices wisely.
   http://ag.ansc.purdue.edu/sheep/articles/control.html

Fighting and Winning the Parasite Battle in Sheep
   Worms: sheep get them, shepherds try to kill them. For a control and prevention program, some knowledge of type of parasites, life cycle of parasite, sheep susceptibility, anthelmintics (dewormers) available, management options available, local and regi
   http://ag.ansc.purdue.edu/sheep/articles/parasite.html

Handling Internal Worm Parasitism in Sheep
   Acquaints the reader with methods of preventing, controlling, and treating parasitism in sheep.
   http://ianrpubs.unl.edu/animaldisease/g864.htm

Internal Parasites
   Life cycles, drench resistance, lab tests and other information.
   http://www.agric.nsw.gov.au/reader/sheep-internal