Buica, G., Antonov, A.E., Beiu, C., Remus, D., Pasculescu, D. and Ahmad, M.A. 2019. Some Features of Non-Safety Costs in Maintenance of Work Equipments: Maintenance of Work Equipment’s. International Journal of Science and Engineering Invention. 5, 04 (Feb. 2019), 39 to 43. DOI:https://doi.org/10.23958/ijsei/vol05-i02/135.