Prego, R., Cobelo-García, A., Tubío, C., & Barciela, M. (2003). Presence, distribution and contamination levels of lead in the surface sediments of the Ria of Ferrol (NW Spain). Iniversidad Autónoma de Baja California.

Prego, R., A. Cobelo-García, C. Tubío, و MC Barciela. Presence, Distribution and Contamination Levels of Lead in the Surface Sediments of the Ria of Ferrol (NW Spain). Iniversidad Autónoma de Baja California, 2003.

Prego, R., A. Cobelo-García, C. Tubío, و MC Barciela. Presence, Distribution and Contamination Levels of Lead in the Surface Sediments of the Ria of Ferrol (NW Spain). Iniversidad Autónoma de Baja California, 2003.