Columbia subject headings:
Harvard subject headings:
Books and reading--Hungary--History.
Manuscripts--Czechoslovakia--Oponice (Slovakia)--Catalogs.
Oponická knižnica--Catalogs.
Oponická knižnica--History.
Private libraries--Czechoslovakia--Oponice (Slovak Socialist Republic)--Catalogs.
Private libraries--Czechoslovakia--Oponice (Slovak Socialist Republic)--History.
Princeton subject headings:
Apponyiovská knižnica v Oponiciach.