Biblio

J. L. Cleasby, Hilmoe, D. J., Dimitracopoulos, C. J., and Diaz-Bossio, L. M., “Effective filtration methods for small water supplies”, vol. EPA/600/14. US Environmental Protection Agency (EPA), Municipal Environmental Research Laboratory, Cincinnati, OH, USA, p. xx + 240 p. : figs., 45 tabs., 90 refs., 1984.

J. L. Cleasby, “Slow sand filtration and direct in-line filtration of a surface water”. Iowa State University, Ames, IA, USA, p. 40 p.: fig., tab., 1982.