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Liu, Jianping, 1965- author.
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Renewable energy sources.
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Helm, Dieter, author
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Alıntı:
Renewable energy sources.
by
Tomain, Joseph P., 1948- author.
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Alıntı:
Renewable energy sources -- Government policy -- United States.
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Hall, Charles A. S.. author
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Alıntı:
Energy return on investment : a unifying principle for biology, economics, and sustainability /
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