Columbia subject headings:
Harvard subject headings:
History--Data processing--Congresses.
History--Databases--Standards--Congresses.
History--Research--Data processing--Congresses.
Princeton subject headings:
Computer networks--Standards--Congresses.
Data transmission systems--Standards--Congresses.
Electronic records--Standards--Congresses.
History--Date bases--Standards--Congresses.
Information storage and retrieval systems--Humanities--Congresses.