Columbia subject headings:
Architecture--Mauritania.
Caravans--Mauritania.
Decoration and ornament, Architectural--Mauritania.
Extinct cities--Mauritania.
Islamic architecture--Mauritania.
Mauritania--History.
Trade routes--Sahara.
Harvard subject headings:
Caravans--Mauritania.
Islamic architecture--Mauritania.
Islamic decoration and ornament--Mauritania.
Mauritania--History.
Princeton subject headings:
Architecture--Arid regions--Mauritania.
Caravans--Mauritania.
Decoration and ornament, Architectural--Mauritania.
Extinct cities--Mauritania.
Islamic architecture--Mauritania.
Mauritania--History.
Trade routes--Sahara.