Ismail Othman, O., Inad Ghayad, A. (2009). Geographical distribution of the cities of the cities province of Basra,by sizes for the period 1977 - 2007. , 8(1994), 1-24.

Osama Ismail Othman; Adnan Inad Ghayad. "Geographical distribution of the cities of the cities province of Basra,by sizes for the period 1977 - 2007". , 8, 1994, 2009, 1-24.

Ismail Othman, O., Inad Ghayad, A. (2009). 'Geographical distribution of the cities of the cities province of Basra,by sizes for the period 1977 - 2007', , 8(1994), pp. 1-24.

Ismail Othman, O., Inad Ghayad, A. Geographical distribution of the cities of the cities province of Basra,by sizes for the period 1977 - 2007. , 2009; 8(1994): 1-24.