http://www.poultryhub.org/health/disease/types-of-disease/parasitic-worms-or-helminths/
http://msucares.com/poultry/diseases/disparas.htm
very detailed is the one below I know Kathy you will like this one...
couple good reads
http://www.kcbbs.gen.nz/lori/ar/worming.html
http://www.peteducation.com/article.cfm?c=15+1829&aid=1560
http://www.petmd.com/bird/conditions/digestive/c_bd_gastrointestinal_parasites-giardiasis
http://poultrykeeper.com/general-chickens/worming-chickens
the last one I think is...