Columbia subject headings:
Harvard subject headings:
Water and civilization--Congresses.
Water conservation--India--Congresses.
Water in literature--Congresses.
Water--Management--Congresses.
Water--Politics and government--Congresses.
Water--Social aspects--India--Congresses.
Water-supply--India--Management--Congresses.
Princeton subject headings:
Water and civilization--Congresses.
Water in literature--Congresses.
Water--Social aspects--India--Congresses.
Water-supply--India--Management--Congresses.