Study and teachingLanguage acquisitionCongressesLanguage and languagesSecond language acquisitionForeign speakersMultilingualismSwedish languageTranslating and interpreting401/.9Code switching (Linguistics)EducationForeign language skillsacquisitionLangage et languesLanguageLanguage and languages--study and teachingLanguage attritionLinguistic changeLinguistic minoritiesMinoritiesP53SociolinguisticsAbility testingAcquisitionAlien labor