http://www.onefd.edu.dz/DEVOIRS-2010-2011/SECONDAIRE/2AS/2AS%20Lettres%20Philosophie/HIS-GEO-D-2AS-10-11.pdfhttp://www.onefd.edu.dz/DEVOIRS-2010-2011/SECONDAIRE/2AS/2AS%20Lettres%20Philosophie/ARA-2APH-D-10-11.pdf