Wati, E. K., Hidayanti, F., & Azman, N. (2020). DESIGN OF THE POLLUTION GAS CARBON MONOXIDE (CO) MONITORING SYSTEM BASED ON MICROCONTROLLER. Spektra: Jurnal Fisika Dan Aplikasinya, 5(1), 1 - 10. https://doi.org/10.21009/SPEKTRA.051.01