Columbia subject headings:
International librarianship--Congresses.
Library cooperation--Caribbean Area--Congresses.
Library cooperation--Latin America--Congresses.
Library cooperation--United States--Congresses.
Harvard subject headings:
International librarianship--Congresses.
Library cooperation--Caribbean--Congresses.
Library cooperation--Latin America--Congresses.
Library cooperation--United States--Congresses.
Princeton subject headings: