Firdaus, Aris Putra, and Lilis Sulistyono. 2018. “Correlation Between SO2 With Acute Respiratory Infection in Surabaya City 2013–2015”. JURNAL KESEHATAN LINGKUNGAN 9 (1):40-47. https://doi.org/10.20473/jkl.v9i1.2017.40-47.