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Retiffy certificate RETUN6 issued to Здравка Христова Минчева from template CCT From Gabrield with values,url:www.retiffy.com,duration:4 часа,template:CCT From Gabrield,dates:2.12.2015,name:Здравка Христова Минчева,school:РИО - Велико Търново, Велико Търново,position:старши експерт по математика,course:Инструменти за привлекателно образование