Columbia subject headings:
Slavic countries--Research--History.
Slavic countries--Study and teaching (Higher)--History.
Harvard subject headings:
Slavic countries--Research--History.
Slavic countries--Study and teaching (Higher)--History.
Slavic philology--Research--History.
Princeton subject headings:
Slavic countries--Research--History.
Slavic countries--Study and teaching (Higher)--History.