ESCOTO, Angela D..
 Gel Permeation Chromatography of Lignite Hydroliquefaction Products-An Exploratory Study.
<strong>Philippine Engineering Journal</strong>, [S.l.], v. 4, n. 1, nov. 2021.
ISSN 2718-9287.
Available at: &lt;<a href="https://journals.upd.edu.ph/index.php/pej/article/view/8348" target="_new">https://journals.upd.edu.ph/index.php/pej/article/view/8348</a>&gt;. Date accessed: 06 sep. 2025.