Asia ; ESP; English for academic purposes; EAP ; Sprachenpolitik; Language management; Language politics ; Periphery (linguistic geography) ; Core/periphery (linguistic geography) ; Three circles model (of world Englishes) ; Center/periphery (linguistic geography) ; Einfluss von Sprachen aufeinander; Sprachberührung; Areallinguistik; Languages in contact ; Verkehrssprache ; English as international medium ; Language variation/Dialectology ; India (English language in) ; Indien (engl. Sprache in) ; English in India ; Other varieties of English