Inam Hussain, Dr. Hafiz Muhammad Irshadullah, Dr. Saqib Shahzad. An Investigation of Biology Lab at Secondary Level in District Mardan. DSSR [Internet]. 2025 Mar. 1 [cited 2025 May 1];3(2):1096-103. Available from: http://www.thedssr.com/index.php/2/article/view/346