Bech i Borràs, Jaume, N. Roca, and F. J. Tobías. “Nivells Basals De Metalls Pesants I Elements traça a sòls De Catalunya”. Dossiers Agraris, no. 7 (May 28, 2002): 19–36. Accessed May 21, 2024. https://revistes.iec.cat/index.php/DA/article/view/23842.001.