The Unique Social Assistance System and social work with families in PAIF: analysis of the 13 years of implementation nationwide and in the city of Teresina-PI. Emancipação [Internet]. 2021 Oct. 14 [cited 2026 May 30];21:1-19. Available from: https://revistas.uepg.br/index.php/emancipacao/article/view/17054