Case study on desertification Oglat Merteba region - Tunisia United Nations conference on desertification Floret, C. Le Floc'h, E. /Pontanier, Roger Romane, F. ECOSYSTEME DESERTIFICATION CLIMATOLOGIE PEDOLOGIE PHYTOECOLOGIE FAUNE SOCIOLOGIE RURALE UTILISATION DU SOL SOL VEGETATION DEGRADATION REGENERATION PERSPECTIVE CEPE L. Emberger 1977 text https://www.documentation.ird.fr/hor/fdi:010025027 fdi:010025027 Floret C., Le Floc'h E., Pontanier Roger, Romane F.. Case study on desertification Oglat Merteba region - Tunisia. In : . United Nations conference on desertification CEPE L. Emberger, 1977, 1-98; p. 136-148 Conférence des Nations Unies sur la Désertification, Nairobi (KEN), 1977 EN