Thesis of Mrs. Aziza Jebbari: “The rain collection technique and its role in improving pastures. The Vallerani System model in the path of the Béni-Guil and Abbou-Lakhal rural communities. ” Aziza Jebbari is co-ordinator in the south area of the “Participatory project to combat desertification and reduce poverty on the plateaus of Eastern Atlas, Morocco”. The UNIDO GSM project: 00212-6-70-48-76-98; 00212-6-61-80-73-72