الوصول الحر: https://doaj.org/article/840f9fdf89f1464f8ad803c6afa19187Test
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الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::67d999ac0290c8cc76587ae5b543e5a4Testhttps://doi.org/10.1002/gdj3.6Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::371d85493debb83d957990b37c813ca4Testhttps://doi.org/10.1002/grl.50950Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::68b4cd31a5013177423829275fea4bfdTesthttps://doi.org/10.5194/cpd-10-4129-2014Test