Columbia subject headings:
Church Slavic language--Alphabet--History.
Church Slavic language--Graphemics.
Church Slavic language--Palatalization.
Church Slavic language--Phonology, Historical.
Harvard subject headings:
Church Slavic language--Palatalization.
Church Slavic language--Phonology.
Princeton subject headings:
Church Slavic language--Alphabet--History.
Church Slavic language--Graphemics.
Church Slavic language--Palatalization.
Church Slavic language--Phonology, Historical.