Columbia subject headings:
Aprilov, Vasil Evstatiev, 1789-1847.
Bulgaria--Intellectual life--19th century--Biography.
Education--Bulgaria--History--Biography.
Harvard subject headings:
Aprilovʺ, Vasilʺ Evstatievʺ, 1789-1847
Bulgaria--Intellectual life--19th century--Biography.
Education--Bulgaria--History--Biography.
Princeton subject headings: