Abbas, E. K. and Mohammed, A. N. (2018) “qatar 1887 - 1913 m dirasat fi ’awdaeiha al’iidariat walaiqtisadiat min khilal alwathayiq aleuthmania”, Journal of Tikrit University for Humanities, 25(11), pp. 296–317. doi: 10.25130/jtuh.25.11.2018.12.