1. Enrichment of trace elements from sewage sludge fertilizer in soils and plants;Andersson;Ambio,1972
2. Crop and food chain effects of toxic elements in sludges and effluents;Chaney,1973
3. The doubtful utility of present-day field experimentation and other determinations involving soil-plant interactions;Collis-George;Soils Fertil.,1960
4. Sources of error in the determination of Cd and Pb in plant material by atomic absorption;De Vries;Commun. Soil Sci. & Plant Anal.,1975
5. Mineral composition of herbage;Fleming,1973