Sisuwan Kaseamsawat and  Sivapan Choo-In,  Surface Water Quality in Orchard Area, Amphawa District, Samut Songkram Province, Thailand.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 85(1). 19 - 22
    [viewed 15 August 2020]. Available from: https://publications.waset.org/pdf/9997133.