Alwan, Qasim H., Ameel Mohammed Rahman, Mohanned Hassib Salman, and Zainab Hassan Ali. 2015. “Characterization of Biochar Produced from IRAQI Palm Fronds by Thermal Pyrolysis”. Al-Khwarizmi Engineering Journal 11 (2): 92-102. https://www.alkej.uobaghdad.edu.iq/index.php/alkej/article/view/228.