https://elearning.eni.dz/moodle/pluginfile.php/41280/course/summary/%D8%A7%D9%84%D9%86%D8%B8%D8%A7%D9%85%20%D8%A7%D9%84%D8%AC%D8%A8%D8%A7%D8%A6%D9%8A%20%D8%A7%D9%84%D8%AC%D8%B2%D8%A7%D8%A6%D8%B1%D9%8A%202025.pdf