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Petroleum
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107
Geology
25
Natural gas
25
Petroleum industry and trade
22
Foreign trade
14
Transportation
13
Tariffs and duties
11
Territories and possessions
10
British-owned territories
9
Pipelines
9
Railroads
8
Analysis
7
Business
7
Exports
7
International relations
7
Labor
7
Mines and mineral resources
7
Agriculture
6
Imports
6
Monthly Consular and Trade Reports
6
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