bilingual bilingualism congresses cyprus education englishlanguage etc foreignspeakers globalization groupidentity handbooks heritagelanguagespeakers indiansofnorthamerica indigenouspeoples influenceonenglish influenceonspanish languageandculture languageandeducation languages linguisticminorities manuals moedertaal multiculturaleducation multilingualism nativelanguageandeducation papuanewguinea socialaspects sociolinguistics spanishlanguage studyandteaching teachers trainingof turkey turkishlanguage turkishteachers tweedetaal umbu-ungulanguage vreemdetalen