Nickel pollution.
D002523:Edible Grain / Q000032:analysis*; D004787:Environmental Pollution / Q000032:analysis; D009532:Nickel / Q000032:analysis*; D010944:Plants / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D014908:Triticum / Q000032:analysis
D012987:Soil; D009532:Nickel