Columbia subject headings:
Harvard subject headings:
Causses (France)--Economic conditions.
Causses (France)--Geography.
Causses (France)--Rural conditions.
Conservation of natural resources--France--Causses.
Landscape protection--France--Causses.
Sustainable development--France--Causses.
Princeton subject headings:
Biodiversity--France--Causses.
Causses (France)--Description and travel.