Earliest evidence of pollution by heavy metals in archaeological sites - Monge Gómez, Guadalupe; Jiménez Espejo, Francisco José; García-Alix Daroca, Antonio; Martínez Ruiz, Francisca; Mattielli, Nadine; Finlayson, Clive; Ohkouchi, Naohiko; Cortés Sánchez, Miguel; Bermúdez de Castro, José María; Blasco, Ruth; Rosell, Jordi; Carrión García, José Sebastián; et al. (2015)