?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Vila+Camps%2C+Luis&rft.aulast=Vila+Camps&rft.aufirst=Luis&rft.date=January+2005&rft.title=Improvement+of+organic+pig+production+with+homeopathic+and+phytotherapeutic+prophylaxis+and+herd+health+management+-+Revision+of+Organic+Pig+Production+and+experiences+of+improvements+of+post+weaning+colibacillosis+under+field+conditions+&rft.inst=Research+Institute+of+Organic+Agriculture+FiBL%2C+CH-Frick+and+Enginyeria+Tecnica+Agricola+en+Explotacions+Agropecuaries%2C+E-Barcelona