Columbia subject headings:
Bibliographical services--United States--Automation--Congresses.
Library information networks--United States--Congresses.
Machine-readable bibliographic data--Congresses.
Online bibliographic searching--Congresses.
Reference services (Libraries)--United States--Automation--Congresses.
Harvard subject headings:
Bibliographical services--United States--Automation--Congresses.
Conference papers and proceedings
Library information networks--United States--Congresses
Machine-readable bibliographic data--Congresses
Online bibliographic searching--Congresses
Reference services (Libraries)--United States--Automation--Congresses.
Princeton subject headings:
Bibliographical services--United States--Automation--Congresses.
Library information networks--United States--Congresses.
Machine-readable bibliographic data--Congresses.
Online bibliographic searching--Congresses.
Reference services (Libraries)--United States--Automation--Congresses.