Hussaini AZ, Bello E, Madu MJ. DESIGN MODIFICATION AND SIMULATION OF A STAIR CLIMBING TROLLEY. FJS [Internet]. 2022 Apr. 1 [cited 2025 Oct. 29];6(1):21-6. Available from: http://www.fjsadmin.fudutsinma.edu.ng/index.php/fjs/article/view/669