09-23-2015, 11:02 PM
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Administrator
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تاريخ التسجيل: Sep 2012
المشاركات: 3,727,761
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What, Really, Does 'Sustainable' Mean?
A version of the word sustainable appears at least 75 times in the sustainable development goals the U.N. will endorse this weekend. We asked some analysts to tell us What, exactly, it means.
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