Erel, O., BCIT School of Health Sciences, Environmental Health and Heacock, H. 2014. The CO2 and PM2.5 levels in Downtown Vancouver at peak (5 p.m.) and off-peak (12 a.m.) hours. BCIT Environmental Public Health Journal. (May 2014). DOI:https://doi.org/10.47339/ephj.2014.139.