Nguyen Cong Thanh

Pescod, M.B. & Thanh, N.Cong, 1976. Application of slow sand filtration for surface water treatment in tropical developing countries, (Research report / Asian Institute of Technology no. 65) Bangkok, Thailand: Asian Institute of Technology, Environmental Engineering Division. Available at: https://pt.ircwash.org/sites/default/files/255.1-76AP-4612.pdf.