Percentages.
Cossu
Raffaello
R
D003247:Conservation of Natural Resources; D055641:Mathematical Concepts; D018505:Waste Management / Q000331:legislation & jurisprudence / Q000592:standards / Q000706:statistics & numerical data*; D014866:Waste Products / Q000032:analysis / Q000706:statistics & numerical data*
D014866:Waste Products