DAS, B.C. Effectiveness of Self-study Material for Teaching General Science to School Students. JOURNAL OF INDIAN EDUCATION, [S. l.], v. 37, n. 4, p. p. 114–132, 2012. Disponível em: http://ejournals.ncert.gov.in/index.php/jie/article/view/1031. Acesso em: 5 jul. 2025.