عبد العزيز دبدوب مروان. 2011. “A Comparison Between Some Statistical Analyses in a Study of the Power of PH and the Concentration of CO2 in Tigris River Through Mosul City”. IRAQI JOURNAL OF STATISTICAL SCIENCES 11 (2):184-203. https://doi.org/10.33899/iqjoss.2011.027613.