Difference between revisions of "D：鉱業"
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| − | [[Category: D-1 | + | {{classification2}} |
| + | *[[:Category:D-1：金属鉱業|D-1. 金属鉱業 / Mining of metal ores]] | ||
| − | *[ | + | *[[:Category:D-2：石炭・亜炭鉱業|D-2. 石炭・亜炭鉱業 / Mining of coal and lignite]] |
| − | *[ | + | *[[:Category:D-3：原油・天然ガス鉱業|D-3. 原油・天然ガス鉱業 / Extraction of crude petroleum and natural gas]] |
| − | *[ | + | *[[:Category:D-4：非金属鉱業|D-4. 非金属鉱業 / Other mining and quarrying]] |
