Columbia subject headings:
Language and languages--Study and teaching.
Russian language--Study and teaching--Foreign speakers.
Typology (Linguistics)
Harvard subject headings:
Language and languages--Study and teaching
Russian language--Study and teaching--Foreign speakers.
Russian language--Study and teaching--Foreign students.
Typology (Linguistics)
Princeton subject headings:
Language and languages--Study and teaching.
Russian language--Study and teaching--Foreign students.
Typology (Linguistics)