YADAV, Manoj Kumar; SINGH, Vinod Kumar. Achievement of Students in Biology in Relation to Demographic Variables. SCHOOL SCIENCE, [S. l.], v. 56, n. 1, p. p.11–18, 2018. Disponível em: http://14.139.250.109:8090/index.php/SS/article/view/2627. Acesso em: 28 apr. 2025.