Regalado, Renelyn Aljay A., Rich Lorraine P. Ulanday, Chuck Jenard B. Marte, and John Jetro R. Francia. 2023. “Eco-Air Purifier Using Air Filter With Activated Carbon”. BOHR International Journal of Civil Engineering and Environmental Science 1 (2):87-91. https://doi.org/10.54646/bijcees.2023.11.