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OECD International Trade
International Trade By Commodity Statistics (HS88)
28: Inorganic chemicals, precious metal compound, isotope
2821: Iron oxides, hydroxides, earth colours >70% iron
2821: Iron oxides, hydroxides, earth colours >70% iron
282110: Iron oxides and hydroxides
282120: Earth colours with >70% iron as Ferrous oxide
2821: Iron oxides, hydroxides, earth colours >70% iron
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