المؤلفون: Dinnar Yahya, Hachmeriyan, Mari Ara, Stoyanova, Milena, Miteva, Valentina, Levkova, Maria, Angelova, Lyudmila
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::56426ed9091820640d3c6c7d120e5330
المؤلفون: Dinnar Yahya, Hachmeriyan, Mari Ara, Stoyanova, Milena, Angelova, Lyudmila
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::11e7ecd3ddab7a01b9d6759f79910e2e