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- Organisation for Economic Co-operation and Development (30)
- Organisation for Economic Co-operation and Development. Statistics Directorate (3)
- International Energy Agency (2)
- Organisation for Economic Co-operation and Development. Dept. of Economics and Statistics (2)
- Centre for Co-operation with European Economies in Transition (1)
- International Energy Agency. Energy Statistics Division (1)
- Organisation for Economic Co-operation and Development. Directorate for Science, Technology, and Industry (1)