1. Chemical analysis;Allen,1986
2. Cadmium, lead and calcium content, number and biomass, in earthworms (Lumbricidae) from sewage sludge treated soil;Andersen;Pedobiologia,1979
3. Distribution of heavy metals in Lumbricus terrestris, Aporrectodea longa and A. rosea measured by atomic absorption and X-ray fluorescence spectrometry;Andersen;Pedobiologia,1982
4. Lead, cadmium, copper and iron in earthworms from roadside sites;Ash;Environ. Pollut. Ser. A,1980
5. The effect of earthworms on the quality of barley and rye grain;Atlavinyte;Pedobiologia,1982