交付 Taiwan
获得最佳体验 获取应用程序
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4.5
全部来自已验证的购买
R**8
Four Stars
Good overview of different types of hydropower applications and somewhat controversial issues involved. Good for the intended age group.
M**.
Five Stars
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Pooja R.
1 周前
法蒂玛 A.
3天前
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阿卜杜拉·B.
3 周前
维克拉姆·D.
2 周前
