Mohammed, N.Q. and Hussin, A.A. 2021. Measuring the availability of Some Requirements of the international standard (ISO21001:2018) A Survey of the teaching staff in several faculties of Kirkuk University. Tikrit Journal of Administrative and Economic Sciences. 17, 56, 3 (Dec. 2021), 126–145. DOI:https://doi.org/10.25130/tjaes.17.56.3.8.