1. Heavy metal contamination near major highways, industrial and urban areas in Belgian grassland;Albasel;Water, Air and Soil Pollut.,1985
2. Cadmium;Alloway,1990
3. Geochemical investigation of the urban area of Berlin;Birke,1994
4. Nature and properties of highly disturbed urban soils, Philadelphia, PennsylBANia;Bockheim,1974
5. Waste materials in urban soils;Bridges,1991