Heavy metals in sewage sludge.
D002104:Cadmium / Q000032:analysis / Q000633:toxicity; D003300:Copper / Q000032:analysis / Q000633:toxicity; D006863:Hydrogen-Ion Concentration; D008670:Metals / Q000032:analysis* / Q000633:toxicity; D009532:Nickel / Q000032:analysis / Q000633:toxicity; D012722:Sewage / Q000032:analysis*; D012987:Soil / Q000032:analysis; D015032:Zinc / Q000032:analysis / Q000633:toxicity
D008670:Metals; D012722:Sewage; D012987:Soil; D002104:Cadmium; D003300:Copper; D009532:Nickel; D015032:Zinc