MENA, Manolo G..
 The Dissolution Characteristics of Chrysocolla in NH₃ -(NH₄)₂ CO₃ Solutions.
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 5, n. 1, oct. 2021.
ISSN 2718-9287.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/pej/article/view/8311" target="_new">https://journals.upd.edu.ph/index.php/pej/article/view/8311</a>&gt;. Date accessed: 01 oct. 2025.