“EFFECT OF MULTI-GRADE TEACHING ON STUDENTS’ COGNITIVE ABILITIES IN MULTI-GRADE LITERACY CENTERS OF PUNJAB”. Pakistan Journal of Society, Education and Language (PJSEL) 7, no. 2 (June 26, 2021): 172–181. Accessed April 16, 2026. https://jehanf.com/pjsel/index.php/journal/article/view/482.