Columbia subject headings:
Children--Health and hygiene--Malawi.
Drinking water--Malawi.
Water-supply--Malawi.
Harvard subject headings:
Child health services--Malawi.
Children--Health and hygiene--Malawi.
Drinking water--Health aspects--Malawi.
Princeton subject headings:
Children--Health and hygiene--Malawi.
Drinking water--Malawi.
Water-supply--Malawi.