Columbia subject headings:
Congresses and conventions--Bibliography.
International cooperation--Bibliography.
International cooperation--Congresses--Bibliography.
International cooperation--Congresses--Directories.
Harvard subject headings:
Congresses and conventions--Bibliography.
International cooperation--Bibliography.
International cooperation--Congresses--Bibliography.
Princeton subject headings:
Congresses and conventions--Bibliography.
International cooperation--Bibliography.
International cooperation--Congresses--Bibliography.