Columbia subject headings:
Narodno chitalishte "Georgi Dimitrov" (Pleven, Bulgaria)--History.
Pleven (Bulgaria)--History.
Pleven (Bulgaria)--Intellectual life.
Harvard subject headings:
Narodno chitalishte "Georgi Dimitrov" (Pleven, Bulgaria)--History.
Pleven (Bulgaria)--History.
Pleven (Bulgaria)--Intellectual life.
Princeton subject headings: