Columbia subject headings:
Rural development--Tropics--Abstracts.
Tropics--Economic conditions--Abstracts.
Harvard subject headings:
Agricultural development projects--Developing countries--Abstracts--Periodicals.
Rural development--Abstracts--Periodicals.
Rural development--Developing countries--Abstracts--Periodicals.
Rural development--Tropics--Abstracts--Periodicals.
Tropics--Abstracts--Periodicals.
Princeton subject headings: