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1968 World Coal; Oil. World Natural Gas; Hydr … [School Atlas, World Atlas] World Coal; Oil. World Natural Gas; Hydr … |
1968 Canada Minerals; Energy. Canada Agricult … [School Atlas, World Atlas] Canada Minerals; Energy. Canada Agricult … |
1968 United States Mineral Fuels. United Stat … [School Atlas, World Atlas] United States Mineral Fuels. United Stat … |
1967 Industry. Pergamon World Atlas. World Atlas Industry. Pergamon World Atlas. Pergamon … |