Columbia subject headings:
Harvard subject headings:
Collection development (Libraries)--Congresses.
Information technology--Congresses
Libraries--Automation--Congresses
Library cooperation--Congresses.
Library information networks--Congresses.
Princeton subject headings:
Collection development (Libraries)--Congresses.
Information technology--Congresses.
Libraries--Automation--Congresses.
Library cooperation--Congresses.
Library information networks--Congresses.