KARL POPPER’S CONCEPT OF ‘WORLD 3’. Pakistan Journal of Social Research, [S. l.], v. 5, n. 02, p. 547–550, 2023. DOI: 10.52567/pjsr.v5i02.1136. Disponível em: https://ojs.pjsr.com.pk/index.php/PJSR/article/view/1136. Acesso em: 27 sep. 2025.