Vila Camps, Luis (2005) 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. Thesis, Research Institute of Organic Agriculture FiBL, CH-Frick and Enginyeria Tecnica Agricola en Explotacions Agropecuaries, E-Barcelona.