Columbia subject headings:
Harvard subject headings:
Unesco. General Conference--Handbooks, manuals, etc.
Unesco. General Conference--Rules and practice--Periodicals.
Unesco. General Conference--Rules and practice.
Princeton subject headings:
Periodicals.
Unesco. General Conference--Handbooks, manuals, etc.
Unesco. General Conference--Rules and practice--Periodicals.
Unesco. General Conference--Rules and practice.