Columbia subject headings:
Bibliographical literature--Publishing--Congresses.
Libraries and publishing--Congresses.
Libraries--Publishing--Congresses.
Library publications--Congresses.
Library science literature--Publishing--Congresses.
Harvard subject headings:
Bibliographical literature--Publishing--Congresses.
Libraries and publishing--Congresses.
Libraries--Publishing--Congresses.
Library publications--Congresses.
Library science literature--Publishing--Congresses.
Princeton subject headings:
Libraries--Publishing.