Managing Europe's water resources : twenty-first century challenges

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Survey of Water Managers for Twenty-First Century Challenges

Hossain, Faisal / Arnold, Jeffrey / Niyogi, Dev et al. | Springer Verlag | 2019

Twenty-First Century China

Ong, E. | British Library Online Contents | 2005

Twenty‐First Century China

Ong, Edmund | Wiley | 2005

Twenty-first century yarn:Nanotechnology

Bland, S. | British Library Online Contents | 2011