الوصول الحر: https://escholarship.org/uc/item/7w0283xtTesthttps://escholarship.org/content/qt7w0283xt/qt7w0283xt.pdfTest
الوصول الحر: https://escholarship.org/uc/item/9cv6n79rTest
الوصول الحر: https://escholarship.org/uc/item/72k6b675Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::fbb85d93a1054ff2078cb62090e921cdTesthttps://escholarship.org/uc/item/72k6b675Test