Pyrkosch MF, Ernst L, Petzold AB. Impact of Drug Abuse on Performance of Gymnasium Students in Germany. journal-of-education [Internet]. 2022 Jan. 11 [cited 2025 Jul. 22];5(1):1-10. Available from: https://stratfordjournalpublishers.org/journals/index.php/journal-of-education/article/view/1025