497 americanliterature anthropologicallinguistics barngarlalanguage bilingualism casestudies codeswitching(linguistics) congresses diglossia(linguistics) endangeredlanguages es425 etc etymology foreignelements handbooks hebrewlanguage historicallexicology ideology indians indiansofnorthamerica indianyouth indigenouspeoples languageandlanguages languageattrition languagemaintenance languageobsolescence languagepolicy languages languageshift languagesincontact lexicology linguisticminorities manuals multilingualism multilingualistm newwords northamerica philosophy revival socialaspects sociolinguistics studyandteaching