Columbia subject headings:
Book industries and trade--History--18th century--Congresses.
Books--History--18th century--Congresses.
Europe--Intellectual life--18th century--Congresses.
Harvard subject headings:
Book industries and trade--History--18th century--Congresses.
Books--History--18th century--Congresses.
Europe--Intellectual life--18th century--Congresses.
Princeton subject headings:
Book industries and trade--History--18th century--Congresses.
Books--History--18th century--Congresses.
Europe--Intellectual life--18th century--Congresses.