Public-private partnership: a study on acquisition and investment in handout material for Early Childhood Education in the municipal public-school system – Irati/PR. Olhar de Professor, [S. l.], v. 24, p. 1–23, 2021. DOI: 10.5212/OlharProfr.v.24.15261.066. Disponível em: https://revistas.uepg.br/index.php/olhardeprofessor/article/view/15261. Acesso em: 16 may. 2026.