Some 200 million people lived on Planet Earth at the start of the modern era. That number rose to 2.5 billion by 1950. At mid-2008, the population is now 7.0 billion and is expected to reach 9.0 billion by 2040. It thus took 1,950 years for the global population to grow ten-fold but only an additional 58 years to nearly triple. And throughout this period the global availability of water resources has remained more or less constant. Growing ever more...
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ПОДРОБНАЯ ИНФОРМАЦИЯ
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2008/10/01
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Краткие сведения
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46471
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1
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1
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2010/07/01
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Disclosed
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Groundwater in rural development : facing the challenges of supply and resource sustainability
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groundwater