Columbia subject headings:
Harvard subject headings:
Booksellers and bookselling--Great Britain--Directories.
Publishers and publishing--Directories
Publishers and publishing--Great Britain--Directories
Radicalism--Periodicals--Directories.
Underground press publications--Great Britain--Directories.
Princeton subject headings:
Booksellers and bookselling--Great Britain--Directories.
Directories.
Publishers and publishing--Great Britain--Directories.
Underground press publications--Great Britain--Directories.