Columbia subject headings:
Authority files (Information retrieval)--Congresses.
Library catalogs--Congresses.
Library information networks--Congresses.
Library use studies--Congresses.
Harvard subject headings:
Authority files (Information retrieval)--Congresses.
Library catalogs--Congresses.
Library information networks--Congresses.
Library use studies--Congresses.
Princeton subject headings:
Authority files (Information retrieval)--Congresses.
Library catalogs--Congresses.
Library information networks--Congresses.
Library use studies--Congresses.