Hamidon MLH, Jumadi R, Khalid A, Jaat N, Salleh H, Samion S. Research On Biodegradable Lubricant in Combustion Engine . japtt [Internet]. 2023 Jan. 5 [cited 2024 May 7];2(2):42-50. Available from: https://publisher.uthm.edu.my/ojs/index.php/japtt/article/view/13280