The third social sector: citizen science in the field of disappearances in Spain. Logos Guardia Civil, Scientific Magazine of the University Center of the Guardia Civil, [S. l.], v. 4, n. 1, p. 171–192, 2026. DOI: 10.64217/logosguardiacivil.v4i1.8461. Disponível em: https://revistacugc.es/revista_cugc/article/view/8461. Acesso em: 9 jul. 2026.