Columbia subject headings:
Europe--Languages--Foreign elements--Greek--Congresses.
Europe--Languages--Foreign elements--Latin--Congresses.
Greek language--Influence--Congresses.
Latin language--Influence--Congresses.
Harvard subject headings:
Europe--Languages--Foreign elements--Greek--Congresses.
Europe--Languages--Foreign elements--Latin--Congresses.
Greek language--Influence on foreign languages--Congresses.
Latin language--Influence on foreign languages--Congresses.
Princeton subject headings:
Europe--Languages--Foreign elements--Greek--Congresses.
Europe--Languages--Foreign elements--Latin--Congresses.
Greek language--Influence on foreign languages--Congresses.
Latin language--Influence on foreign languages--Congresses.