SYED SHAHAB UDDIN. IMPORTANCE OF ENVIRONMENTAL STUDIES AND CHALLENGES OF ENVIRONMENTAL CHANGING IN SOUTH ASIA. Pakistan Journal of Educational Research , [S. l.], v. 4, n. 2, 2021. DOI: 10.52337/pjer.v4i2.479. Disponível em: https://pjer.org/index.php/pjer/article/view/479. Acesso em: 13 sep. 2026.