MUTHUKUMARI, J.; RAMAKRISHNAN, N. DEVELOPMENT AND VALIDATION OF E-CONTENT ON HISTORY SUBJECT (THE BEGINNING OF MODERN AGE) OF IX STANDARD STUDENTS. International Journal of Research -GRANTHAALAYAH, [S. l.], v. 5, n. 9(SE), p. 46–50, 2017. DOI: 10.29121/granthaalayah.v5.i9(SE).2017.2255. Disponível em: https://www.granthaalayahpublication.org/journals/granthaalayah/article/view/IJRG17_SE09_06. Acesso em: 21 may. 2024.