Columbia subject headings:
Irrigation--Social aspects--Sri Lanka--Uva--Case studies.
Migration, Internal--Sri Lanka--Uva--Case studies.
Rural development--Sri Lanka--Uva--Case studies.
Harvard subject headings:
Irrigation--Social aspects--Sri Lanka--Uva--Case studies.
Migration, Internal--Sri Lanka--Uva--Case studies.
Rural development--Sri Lanka--Uva--Case studies.
Princeton subject headings: