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se realizaron 4 conferencias internacionales: París 1851 y 1859, Constantinopla 1866 y Viena 1874. Sin embargo solamente se trataron asuntos que preocupaban a Europa como el cólera
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.