Columbia subject headings:
Agriculture--Economic aspects--Congresses.
Developing countries--Food supply--Congresses.
Food supply--Congresses.
Harvard subject headings:
Agriculture--Economic aspects--Congresses
Developing countries--Food supply--Congresses.
Food supply--Congresses
Food supply--Developing countries--Congresses
Princeton subject headings:
Agriculture--Economic aspects--Congresses.
Food supply--Congresses.
Food supply--Developing countries--Congresses.