USE OF MAIN CAUSE AND EFFECT APPARATUS IN THE ASSESSMENT OF THE IMPACT OF ENVIRONMENTAL FACTORS ON THE RUNNING COSTS OF TOYOTA HIACE BUSES OF FLEET OPERATIVE ENTERPRISE. IJSE [Internet]. 2025 Mar. 10 [cited 2025 Nov. 30];1(1):1-9. Available from: https://www.ijsen.com/journal/article/view/53