Andhika, R. et al. 2015. ELECTRODEPOSITION OF Cu ON THE SURFACE OF SILICA FREE RICE HUSK ACTIVATED CARBON WITH ULTRASONIC IRRADIATION. Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta). 8, 2 (Dec. 2015), 29–37. DOI:https://doi.org/10.20956/ica.v8i2.2471.