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සිවුමංසල කොලූගැටයා #71: රියෝ සමුළුව – තිරසාර අනාගතයකට හුදකලා චාරිකාවක්?
This week’s Ravaya column (in Sinhala) is a preview of a key challenge being taken up at the UN Conference on Sustainable Development being held in Rio de Janeiro, Brazil, this month. I raise…