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P. Avery,
Sediment control at intakes : a design guide. Bedford, UK: BHRA Fluid Engineering, 1989, p. x, 143 p.: fig.
G. A. Bridger,
«Urban water supply and sanitation», vol. no. D2. National Water Supply and Drainage Board, Ratmalana, Sri Lanka, p. 2 vol. (various paging): fig., tab., 1989.