Díez, M Background arsenic concentrations in Southeastern Spanish soils. [electronic resource] - The Science of the total environment May 2007 - 5-12 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0048-9697 Standard No.: 10.1016/j.scitotenv.2007.01.013 doi Subjects--Topical Terms: Arsenic--analysisEnvironmental MonitoringSoil Pollutants--analysisSpain