TAWFIQ, L. N. M.; 						TAWFIQ, M. N. M..
 Using Semi-Analytic Method  to Decreasing Dangers of  Lead.
<strong>Ibn AL- Haitham Journal For Pure and Applied Science</strong>, [S.l.], v. 24, n. 3, dec. 2016.
ISSN 2521-3407.
Available at: &lt;<a href="http://jih.uobaghdad.edu.iq/index.php/j/article/view/838" target="_new">http://jih.uobaghdad.edu.iq/index.php/j/article/view/838</a>&gt;. Date accessed: 01 dec. 2019.