SHARMA, Manika; KHATOON, Tahira. CO-CURRICULAR ACTIVITIES AND SCIENCE ACHIEVEMENT OF SECONDARY SCHOOL STUDENTS. THE PRIMARY TEACHER, [S. l.], v. 36, n. 1-2, p. p.74–82, 2011. Disponível em: http://ejournals.ncert.gov.in/index.php/tpt/article/view/768. Acesso em: 16 jun. 2025.