Columbia subject headings:
Bulgaria--Intellectual life--20th century.
Communism.
Emigration and immigration.
Intellectuals--Bulgaria.
Soviet Union--Intellectual life.
Wallraff, Günter, 1942-
Harvard subject headings:
Bochev, Dimitŭr, 1944---Biography.
Bulgaria--Civilization--20th century.
Bulgaria--Cultural policy.
Princeton subject headings: