Adamo, Paola, and Luisella Celi. “Knowledge, Conservation and Sustainable Use of Soil: Agricultural Chemistry Aspects”. Italian Journal of Agronomy 4, no. s3 (October 5, 2009): 137–150. Accessed June 12, 2025. https://agronomy.pagepress.org/index.php/agro/article/view/ija.2009.s3.137.