Columbia subject headings:
Books of hours--Italy--15th century--Catalogs.
Books of hours--Italy--15th century.
Incunabula--Italy--Catalogs.
Prayer books--Bibliography--Catalogs.
Harvard subject headings:
Books of hours--Bibliography.
Incunabula--Italy--Bibliography.
Prayer books--Bibliography.
Princeton subject headings:
Book collecting.
Books of hours--Italy--15th century--Bibliography.
Books of hours--Italy--15th century--History.
Books of hours--Italy--16th century--History.