M. Ayub Khan Yousuf Zai, Bulbul Jan, & M. Rashid Kamal Ansari. (2013). Investigating Explorative Character of Ozone Layer Depletion Between Pakistan and China: A Comparative Regional Study. Journal of Basic & Applied Sciences, 9, 483–488. https://doi.org/10.6000/1927-5129.2013.09.62