• 10 Map Library (Robinson)

• 7 Land use
• 7 Population
• 2 Administrative and political divisions
• 2 Economic conditions
• 2 Industries
• 2 Mines and mineral resources
• 1 Chemical industries
• 1 Electric power distribution
• 1 Ethnology
• 1 Iron industry and trade
• 1 Languages
• 1 Machinery industry
• 1 Metal-work
• 1 Metallurgy
• 1 Petroleum refineries
• 1 Phytogeography
• 1 Steel industry and trade

• 10 English

• 1 Angola
• 1 Berlin (Germany)
• 1 Burkina Faso
• 1 Burma
• 1 France
• 1 Germany (West)
• 1 Haiti
• 1 Norway
• 1 Portugal
• 1 Soviet Union
• 1 Yemen (Republic)

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