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Energy sources
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6
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Energy sources
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Environmental pollution
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1
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Energy carrier
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6
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Energy policy
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1
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Energy policy
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Chornobyl'
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Nuclear reactor accident
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Protestant Church
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1
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Energy and state
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1
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Energy industries
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2
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Energy policy Germany
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1
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Energy conservation Germany
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1
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Engineering
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1
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Energy development Environmental aspects Congresses
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1
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Environment (Art)
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1
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Environmental change
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2
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Environmental crisis
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Development
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Population development
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World economy
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1
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Environmental damage
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1
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Environmental damage
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Climatic change
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Globalization
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International environmental protection
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Sustainable development
|
1
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Environmental Health
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1
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Environmental sciences
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1
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Environmentally friendly
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Power supply
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Renewable energy
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Sustainable development
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1
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Environmental protection
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3
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