فهرس المقالات T R Jan المقاله 1 - Cost Benefit Analysis of Three Non-Identical Machine Model with Priority in Operation and Repair 20.1001.1.23221437.2021.9.35.1.0 10.52547/jist.9.35.151 Nafeesa Bashir Raeesa Bashir JP Singh Joorel Tariq Rashid Jan Jan Journal of Information Systems and Telecommunication (JIST) , العدد 3 , السنة 9 , تابستان 2021