id	domain	url
stem-7655	doi.org	https://doi.org/10.1080/15348458.2017.1327816
stem-7655	www.coe.int	https://www.coe.int/en/web/commoneuropean-framework-reference-languages
stem-7655	doi.org	https://doi.org/10.1080/14790718.2021.1878765
stem-7655	doi.org	https://doi.org/10.1080/15348458.2017.1327816
stem-7655	www.coe.int	https://www.coe.int/en/web/common-european-framework-reference-languages
stem-7655	www.coe.int	https://www.coe.int/en/web/common-european-framework-reference-languages
stem-7655	doi.org	https://doi.org/10.1080/14790718.2021.1878765