Dal SJ-, Sung KH-. An Experiment on Apparent Specific Gravity and Settleable Degree of Fire Extinguishing Agent according to Durable Years of Regional Powder Extinguisher . ijmst [Internet]. 2023Jun.1 [cited 2024Jul.22];10(1):143-5. Available from: https://cosmosscholars.com/phms/index.php/ijmst/article/view/1440