Columbia subject headings:
Biblioteca centrale della Regione siciliana.
Library resources--Italy--Palermo.
Manuscripts--Italy--Palermo--Catalogs.
Rare books--Italy--Palermo--Bibliography--Catalogs.
Regional libraries--Italy--Palermo.
Harvard subject headings:
Biblioteca centrale della Regione siciliana.
Library resources--Italy--Palermo.
Manuscripts--Italy--Palermo--Catalogs.
Rare books--Italy--Palermo--Bibliography--Catalogs.
Regional libraries--Italy--Palermo.
Princeton subject headings: