Ali Z, Afzal K, Wassan MR. Environmental Education and Sustainable Development: A Qualitative Content Analysis of Textbooks in the Schools of Islamabad. Progressive Research Journal of Arts & Humanities [Internet]. 2025 Dec. 1 [cited 2026 Aug. 2];8(1):85-9. Available from: https://prjah.org/index.php/prjah/article/view/469