http://gis.synersys.org/2009/07/23/the-satellites-data-use-for-monitoring-the-degradation-process-of-natural-resources-in-semi-arid-zones-case-of-southern-region-of-the-aures-algeria/% Sun, 12 Feb 2012 02:33:11 +0000 http://wordpress.org/?v=2.5.1