Public-private partnership: a study on acquisition and investment in handout material for Early Childhood Education in the municipal public-school system – Irati/PR. OlharProfr [Internet]. 2021 Jun. 26 [cited 2026 May 16];24:1-23. Available from: https://revistas.uepg.br/index.php/olhardeprofessor/article/view/15261