SIMANUNGKALIT, Lasmaria Nami. The Based Instructional Materials Development Biology Environmental Issues in Improving Students’ Knowledge on The Basic Concepts Of Ecology. IJEEM - Indonesian Journal of Environmental Education and Management, [S. l.], v. 2, n. 2, p. 21–39, 2017. DOI: 10.21009/IJEEM.022.02. Disponível em: https://journal.unj.ac.id/unj/index.php/ijeem/article/view/3715. Acesso em: 6 nov. 2024.