MENA, Marino M..
 Combined Treatment: An Economical Alternative Approach to Stream Pollution Control.
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 31, n. 2, aug. 2021.
ISSN 2718-9287.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/pej/article/view/7951" target="_new">https://journals.upd.edu.ph/index.php/pej/article/view/7951</a>&gt;. Date accessed: 10 sep. 2025.