?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=McLean%2C+Barbara&rft.aulast=McLean&rft.aufirst=Barbara&rft.date=2005&rft.title=The+inclusion+of+diatomaceous+earth+in+the+diet+of+grazing+ruminants+and+its+effect+on+gastrointestinal+parasite+burdens&rft.genre=proceeding