S. V. SHARMA; YADAV, Saryug. A Study of Students’ Conceptual Understanding of the Content of EVS at the Primary Stage. SCHOOL SCIENCE, [S. l.], v. 55, n. 2-3, p. p.27–34, 2017. Disponível em: http://14.139.250.109/index.php/SS/article/view/2492. Acesso em: 20 aug. 2025.