Columbia subject headings:
Camels--Symbolic aspects--Congresses.
Nomads--Congresses.
Nomads--Social life and customs--Congresses.
Symbolism--Congresses.
Harvard subject headings:
Camels--Symbolic aspects--Congresses.
Nomads--Congresses.
Nomads--Social life and customs--Congresses.
Symbolism--Congresses.
Princeton subject headings: