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Mohzana,, Mohzana and Fathan, Fathan and Bernadetha Nadeak, Nadeak and Wahyudin Ritonga, Wahyudin and Ismail Suardi Wekke, Ismail Bullying And Unhealthy Psychological Atmosphere In Class: It's Impact On the Quality of Education. Turkish Jurnal of Physiotherapy and Rehabilitation. ISSN 2651-446X