Projected Productive Age Population in East Kalimantan in 2040. Sustainability (STPP) Theory, Practice and Policy, [S. l.], v. 5, n. 2, p. 74–84, 2025. DOI: 10.30631/qv12sx97. Disponível em: https://e-journal.lp2m.uinjambi.ac.id/ojp/index.php/SDGs/article/view/3158. Acesso em: 17 dec. 2025.