2021-09-062021-09-062020Martínez -Adrián, M. (2020). Key concepts in applied linguistics. the use of previously known languages by L2 learners: a not so clear-cut phenomenon. Elia. Estudios de lingüística inglesa aplicada, 191-208.1576-5059https://hdl.handle.net/11441/125408application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Key concepts in applied linguistics. The use of previously known languages by L2 learners: a not so clear-cut phenomenonConceptos clave de la lingüística aplicadainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess10.12795/elia.2020.i20.07