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• orak.jahanbakhsh The Effectiveness of Leisure Time on Happiness, Self-Efficacy and Mental Health in Secondary School Students in Baghmalek City in the Year 2017-2018 [ Vol.17, Issue 69 - Winter Year 1400]
• orak.jahanbakhsh The Effectiveness of Leisure Time on Happiness, Self-Efficacy and Mental Health in Secondary School Students in Baghmalek City in the Year 2017-2018 [ Vol.17, Issue 69 - Winter Year 1400]