Open Science Research Excellence
Asif Mansoor and  Nasiruddin Khan and  Noreen Jamil,  Quantitative Study for Exchange of Gases from Open Sewer Channel to Atmosphere.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology. February 2008, vol. 14(2). 130 - 132[viewed 18 July 2019]. Available from: http://waset.org/publications/10523.