Columbia subject headings:
Book industries and trade--Congresses.
Literature--Congresses.
Publishers and publishing--Congresses.
Harvard subject headings:
Book industries and trade--Congresses
Books and reading--History
Literature--Congresses.
Printing--History
Publishers and publishing--Congresses
Type and type-founding--History
Writing--History
Princeton subject headings:
Book industries and trade--Congresses.
Literature--Congresses.
Publishers and publishing--Congresses.