Columbia subject headings:
Harvard subject headings:
Rare book libraries--Great Britain--Directories.
Rare book libraries--Ireland--Directories.
Rare books--Great Britain--Library resources--Directories.
Rare books--Ireland--Library resources--Directories.
Special libraries--Great Britain--Directories.
Special libraries--Ireland--Directories.
Princeton subject headings:
Library resources--Great Britain--Directories.
Library resources--Ireland--Directories.
Rare book libraries--Great Britain--Directories.
Rare book libraries--Ireland--Directories.
Rare books--Library resources--Directories.