SHEHAB AHMED, Ali.
 Effectof adding of vitamin b12 to tris extender and cooling period on the sperms viablilty for awassi rams.
<strong>Journal of Kerbala for Agricultural Sciences</strong>, [S.l.], v. 4, n. 2, p. 59-70, june 2017.
ISSN 2616-6933.
Available at: &lt;<a href="https://journals.uokerbala.edu.iq/index.php/Agriculture/article/view/182" target="_new">https://journals.uokerbala.edu.iq/index.php/Agriculture/article/view/182</a>&gt;. Date accessed: 24 nov. 2019.