Columbia subject headings:
Harvard subject headings:
Agriculture--Congresses
Agriculture--Developing countries--Congresses.
Agriculture--Economic aspects--Congresses
Agriculture--Economic aspects--Developing countries--Congresses
Rural development--Congresses
Princeton subject headings:
Agriculture--Congresses.
Agriculture--Developing countries--Congresses.
Agriculture--Economic aspects--Congresses.
Agriculture--Economic aspects--Developing countries--Congresses.
Rural development--Congresses.