AU - Hoadjli, Ahmed Chaouki. ID - 22320 OP - pp. 51-68 T1 - Investigating the Validity of Achievement Tests in the Algerian Secondary Schools : The Case of EFL Classes in the Biskra Region [Article] UL - 1 http://search.shamaa.org/fulltext.gif http://revues.univ-biskra.dz/index.php/sh/article/view/711/664 Full text (PDF)