URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::35fd951d2925ac06ea1570c03f73375ahttps://doi.org/10.21608/deu.2020.159530
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::7eb205d1a40fbaa9459692fef3a9d0c4https://doi.org/10.14500/krc2019.gen256
الإتاحة: http://www.askzad.com/viewer?imageName=IzFxFtALK22Xuixj-04nSQ..&service=3&ref=eb
الإتاحة: http://www.askzad.com/viewer?imageName=205882&service=3