WASET
    J. O. Yeboah and  K Aboraa and  K. Kodom,  Progressive Changes in Physicochemical Constituent of Rainwater: A Case Study at Oyoko, a Rural Community in Ghana.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 83(11). 805 - 810
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10001654.