1. Cadmium;Alloway,1990
2. Crop Nutrition and Fertiliser Use;Archer,1988
3. Effects of Metals in Sludge-Treated Soils on Crops;Carlton-Smith,1987
4. Effects of long-term sludge application on accumulation of trace elements by crops;Chang,1987
5. Cadmium soil sorption at low concentrations: I. Effect of time, cadmium load, pH and calcium;Christensen;Water, Air, and Soil Pollut.,1984