Difference between revisions of "F：製造業 鉄鋼業"
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| − | *[ | + | *[[:Category:F-43：鉄鋼業|F-43. 鉄鋼業 / Steel]] |
| − | *[ | + | *[[:Category:F-44：製鉄業|F-44. 製鉄業 / Iron smelting]] |
| − | *[ | + | *[[:Category:F-45：製鋼業・その他|F-45. 製鋼業・その他 / Steel products and others]] |
