Columbia subject headings:
Church Slavic language--East Slavic recension.
Church Slavic language--Russian recension.
Russian language--1300-1700--History.
Russian language--To 1300--History.
Harvard subject headings:
Church Slavic language--East Slavic recension
Church Slavic language--Russian recension
Russian language--1300-1700.
Russian language--To 1300.
Princeton subject headings:
Church Slavic language--East Slavic recension.
Church Slavic language--Russian recension.
Russian language--1300-1700--History.
Russian language--To 1300--History.