Recent progress in slow sand and alternative biofiltration processes / 
edited by Rolf Gimbel, Nigel J. D. Graham, M. Robin Collins. 
 - xv, 581p. :  illustrations ;  25 cm. 
<br/><br/><label>ISBN: </label>1843391201 9781843391203 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water --Purification --Slow sand filtration.<br/>Water --Purification --Filtration.
<br/><br/><label>LC Class. No.: </label>TD445   / .R42 2006