Title: Challenges for drylands in the new millenium
Subjects: Arid regions, Congresses, Arid regions ecology, Agriculturally marginal lands, Sustainable development, Sustainable agriculture, Régions arides, Congrès, Écologie des régions arides, Terres marginales (Agriculture), Développement durable, Agriculture durable
Places: North Africa, Asia, Afrique du Nord, Asie