SALEM, Assem (2005) Biological control of Phytophthora nicotianae and organic media standardization in citrus nurseries. [La lutte biologique contre Phytophthora nicotianae et la standardisation des substrats biologiques dans les pépinières d’agrumes.] Thesis, IAMB Mediterranean Agronomic Institute of Bari, Organic Farming. [ Unpublished, ]