Biblio

T. H. Provincial Bangkok and IRC International Water and Sanitation Centre, The Hague, NL, “SSF Research and Demonstration project on Slow sand Filtration : final report phase II Thailand”. Rijswijk, The Netherlands, p. ii, 79 p.: fig., tab., 1982.

M. M. Riti, Horizontal roughing filter as pretreatment with slow sand filters, vol. No. N:o 12. Tampere, Finland: Tampere University of Technology, Dept. of Civil Engineering, 1981, p. iv, 145 p. : fig. tab.

N. C. Thanh and Ouano, E. A. R., “Horizontal flow coarse material prefiltration”, vol. no. 70. Asian Institute of Technology, Environmental Engineering Division, Bangkok, Thailand, p. iii, 46 p.: fig., tab., 1977.

M. B. Pescod and Thanh, N. Cong, “Application of slow sand filtration for surface water treatment in tropical developing countries”, vol. no. 65. Asian Institute of Technology, Environmental Engineering Division, Bangkok, Thailand, p. iv, 75 p.: fig., tab., 1976.

K. Schmidt, “Intermittent operation of slow sand filters for artificial recharge of groundwater”, presented at the 1975-01-01, Voorburg, The Netherlands, 1975, p. 8, ((16)) p.: fig.