Aditia Prathama, Ahmad Taqwa, and Adewasti. 2025. “DESIGN AND CONSTRUCTION OF INTERNET BASED MONITORING DEVICES THINGS(IOT) FOR MONITORING METHANE GAS IN MINES COAL USING MQ-4 SENSOR”. Multidiciplinary Output Research For Actual and International Issue (MORFAI) 5 (4):2073-84. https://doi.org/10.54443/morfai.v5i4.3175.