Columbia subject headings:
Architecture--Environmental aspects--Islamic countries--Congresses.
Urban renewal--Islamic countries--Congresses.
Harvard subject headings:
Architecture--Environmental aspects--Islamic countries--Congresses.
Urban renewal--Islamic countries--Congresses.
Urbanization--Yemen (Republic).
Yemen (Republic)--Social conditions.
Princeton subject headings:
Architecture--Environmental aspects--Islamic countries--Congresses.
Urban renewal--Islamic countries--Congresses.