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1968 World Coal; Oil. World Natur … [School Atlas, World Atlas] World Coal; Oil. World Natur … |
1968 Canada Minerals; Energy. Can … [School Atlas, World Atlas] Canada Minerals; Energy. Can … |
1968 United States Mineral Fuels. … [School Atlas, World Atlas] United States Mineral Fuels. … |
1967 Industry. Pergamon World Atl … World Atlas Industry. Pergamon World Atl … |