Columbia subject headings:
Castles--Belarus--Encyclopedias.
Castles--Lithuania (Grand Duchy)--Encyclopedias.
Castles--Lithuania--Encyclopedias.
Cities and towns--Belarus--Encyclopedias.
Cities and towns--Lithuania (Grand Duchy)--Encyclopedias.
Cities and towns--Lithuania--Encyclopedias.
Fortification--Belarus--Encyclopedias.
Fortification--Lithuania (Grand Duchy)--Encyclopedias.
Fortification--Lithuania--Encyclopedias.
Harvard subject headings:
Cities and towns--Lithuania (Grand Duchy)--History--Dictionaries.
Lithuania (Grand Duchy)--History, Local--Dictionaries.
Princeton subject headings: