الوصول الحر: https://doaj.org/article/d5c30321ef124c748af51b0123d80934Test
الوصول الحر: https://doaj.org/article/706525dd49814e099a0008471a1640d9Test
الإتاحة: https://doi.org/10.36660/abc.20210718Testhttps://doaj.org/article/706525dd49814e099a0008471a1640d9Test