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OECD International Trade
International Trade By Commodity Statistics (SITC Rev. 3)
8: Miscellaneous manufactured articles
87: Professional and scientific instruments, n.e.s.
871: Optical instruments & apparatus, n.e.s.
8719: Other optical appliances & instruments, n.e.s.
87199: Parts & accessories of articles of sub-group 8719
87199: Parts & accessories of articles of sub-group 8719
87199: Parts & accessories of articles of sub-group 8719
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