Polis, D. (1970). The Geographical Distribution Zones of Northern Ubaid Ware. , 5(1), 335-363. doi: 10.33899/athar.1970.164609
Duraid S. Polis. "The Geographical Distribution Zones of Northern Ubaid Ware". , 5, 1, 1970, 335-363. doi: 10.33899/athar.1970.164609
Polis, D. (1970). 'The Geographical Distribution Zones of Northern Ubaid Ware', , 5(1), pp. 335-363. doi: 10.33899/athar.1970.164609
Polis, D. The Geographical Distribution Zones of Northern Ubaid Ware. , 1970; 5(1): 335-363. doi: 10.33899/athar.1970.164609