A. Khalifa, N. ., Zulkiple, A., Gheit Ali Alfughi, A., Ali Almukhtar attboli, I., & Salem Abolbaida Ghammeid, A. (2019). Critical review of flexible pavement maintenance management systems. International Journal of Engineering & Technology, 8(2), 95-101. https://doi.org/10.14419/ijet.v7i4.26957