Sharma, B., Sandeep Sharma, S. x, Bhardwaj, S. K., Kaur, L., & Sharma, A. (2017). Evaluation of Air Pollution Tolerance Index (APTI) as a tool to monitor pollution and green belt development: A review. Journal of Applied and Natural Science, 9(3), 1637–1643. https://doi.org/10.31018/jans.v9i3.1414