Columbia subject headings:
Konstantin, Filozof, active 14th century-15th century.
Serbia--Kings and rulers--Biography.
Stefan Lazarević, Prince of Serbia, approximately 1373-1427.
Harvard subject headings:
Church Slavic language--Orthography and spelling--Early works to 1800.
Serbia--Kings and rulers--Biography.
Stefan Lazarević, Prince of Serbia, approximately 1373-1427.
Princeton subject headings: