الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d719d22212888348aedce43d4678181Testhttps://ojs.brazilianjournals.com.br/ojs/index.php/BJHR/article/view/16331Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::6ae842cfb873baefa14af3fdef729b44Testhttps://doi.org/10.22533/at.ed.046201506Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::cde0d5631b0a9e9e98309afbc5aaca3dTesthttps://doi.org/10.22533/at.ed.0462015067Test