Circular economy, motivations for its adoption, and the main challenges in its implementation “A presentation of the German experience (2017-2020)”. renaf [انترنت]. 30 يونيو، 2025 [وثق 23 أكتوبر، 2026];20(34):1-16. موجود في: https://journals.univ-chlef.dz/index.php/renaf/article/view/217