CUBA JIMÉNEZ, R. . Contribution of Natural Sciences to environmental education in the 3rd Cuban educational improvement. Atenas, Matanzas, CU, v. 1, n. 53, p. 173–188, 2021. Disponível em: https://monografias.umcc.cu/index.php/atenas/article/view/98. Acesso em: 3 jul. 2024.