Optimism and Pessimism during coronavirus pandemic & its relationship with psychological resilience on a sample of tenth grades students in Al-Sharqiya North at Sultanate of Oman . JEPS [Internet]. 2021 Feb. 27 [cited 2024 Jul. 3];5(5):163-51. Available from: https://journals.ajsrp.com/index.php/jeps/article/view/3262