Columbia subject headings:
Greece--Languages--Political aspects.
Language and culture--Greece.
Socialism--Greece--History--19th century.
Harvard subject headings:
Greece--Languages--Political aspects.
Language and culture--Greece
Socialism--Greece--History--19th century.
Princeton subject headings:
Greek language, Modern--Vocabulary--History--19th century.
Greek language, Modern--Vocabulary--History--20th century.
Socialism--Greece--History--19th century.
Socialism--Greece--History--20th century.