Columbia subject headings:
Beirut (Lebanon)--Social conditions.
Health surveys--Lebanon--Beirut.
Public health--Lebanon--Beirut.
Harvard subject headings:
Health surveys--Lebanon--Beirut.
Public health--Lebanon--Beirut.
Princeton subject headings:
Beirut (Lebanon)--Population.
Beirut (Lebanon)--Social conditions.
Health surveys--Lebanon--Beirut.
Public health--Lebanon--Beirut.