Columbia subject headings:
Camels--Africa, North.
Camels--Asia.
Harvard subject headings:
Camels--Africa, North--Congresses.
Camels--Africa, North.
Camels--Asia--Congresses.
Camels--Asia.
Princeton subject headings:
Camels--Africa, North--Congresses.
Camels--Asia--Congresses.
Camels--Effect of human beings on--Africa, North--Congresses.
Camels--Effect of human beings on--Asia--Congresses.