Columbia subject headings:
Deserts--Africa, North.
Juf (Mali and Mauretania)
Sahara.
Harvard subject headings:
Deserts--Africa, North
Deserts--Africa, North.
Juf (Mali and Mauretania)
Sahara.
Princeton subject headings:
Deserts--Africa, North.
Juf (Mali and Mauretania)
Sahara.