1. Trace Elements in the Terrestrial Environment;Adriano,1986
2. Biogeochemistry of Trace Metals;Adriano,1992
3. Heavy Metals in Soils;Alloway,1990
4. Heavy metals on Swedish soils; on their retention distribution and amounts;Andersson;Swed. J. Agric. Res.,1979
5. Trace element concentrations in soils and plants of western Europe;Angelone,1992