• 2 Map Library (Robinson)

• 2 Maps, Atlases

• 1 Administrative and political divisions
• 1 Chemical industries
• 1 E2
• 1 Electric power distribution
• 1 Ethnology
• 1 Land use
• 1 Machinery industry
• 1 Metal-work
• 1 Mines and mineral resources
• 1 Petroleum refineries
• 1 Population

• 2 United States. Central Intelligence Agency

• 2 English

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