Columbia subject headings:
Electronic publishing--Europe--History--Congresses.
Newspaper presses--Europe--History--Congresses.
Newspaper presses--History--Congresses.
Newspaper publishing--Europe--History--Congresses.
Newspaper publishing--History--Congresses.
Printing--Europe--History--Congresses.
Harvard subject headings:
Electronic publishing--Europe--History--Congresses.
Newspaper presses--Europe--History--Congresses.
Newspaper presses--History--Congresses.
Newspaper publishing--Europe--History--Congresses.
Newspaper publishing--History--Congresses.
Printing--Europe--History--Congresses.
Princeton subject headings:
Electronic publishing--Europe--History--Congresses.
Newspaper presses--Europe--History--Congresses.
Newspaper presses--History--Congresses.
Newspaper publishing--Europe--History--Congresses.
Newspaper publishing--History--Congresses.
Printing--Europe--History--Congresses.