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oil well
☊
giếng dầu
☊
oil well
☊
giếng dầu hỏa
☊
oil well
☊
mỏ dầu
☊
Oil well
☊
Ölquelle
☊
< 19.22 Rohstoffe, Werkstoffe
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oil well
Nature
The power industry
oil well ☊ 
giếng dầu ☊ oil well ☊ giếng dầu hỏa ☊ oil well ☊ mỏ dầu ☊ Oil well ☊ 
Ölquelle ☊ < 19.22 Rohstoffe, Werkstoffe