LIU, Yu. A Study on Social Work Case Interventions for the Diverse Elderly Care Needs of Families Who Have Lost Their Only Child : Based on Field Research in J City. Frontiers in Humanities and Social Sciences, [S. l.], v. 6, n. 4, p. 120–124, 2026. DOI: 10.54691/n0dmty47. Disponível em: https://fhssjournal.org/index.php/ojs/article/view/605. Acesso em: 5 sep. 2026.