Columbia subject headings:
Communication in learning and scholarship--Europe--History--18th century--Congresses.
Europe--Intellectual life--18th century--Congresses.
Harvard subject headings:
Communication in learning and scholarship--Europe--History--18th century--Congresses.
Europe--Intellectual life--18th century--Congresses.
Princeton subject headings:
Communication in learning and scholarship--Europe--History--18th century--Congresses.
Europe--Intellectual life--18th century--Congresses.