Deutsch-Chinesische Enzyklopädie, 德汉百科
       
German — Chinese
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Catalog Energy resource Catalog Vietnam
Petrovietnam Deutscher Wortschatz
  1 2 years ago
  First author
越南石油天然气集团/Vietnam Oil and Gas Group
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  Author admin@yizuo-media.com Petrovietnam
2 years ago
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