Sisuwan Kaseamsawat and Sivapan Choo-In, Heavy Metal Concentration 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. June 2014, vol. 91(7). 497 - 499 [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9998821.