Yousif Abdul-ahad, M. (2008) “Experimental Studies on the Benification of Fine Solids by Forth Flotation”, Iraqi Journal of Chemical and Petroleum Engineering, 9(1), pp. 31-34. Available at: http://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/427 (Accessed: 29November2019).