Low-cost, on-site sanitation options
By: L.F.Hoffman, H.A.Heijnen.
Contributors: Heijnen, H.A.; International Reference Centrefor Community Water Supply and Sanitation.; Slowsand Filtration (Project)
Series: Occasionalpaper / International Reference Centre for Community Water Supply and Sanitation -- no.21
Publisher: The Centre
Published: 1981
Place of publication: The Hague
Language: eng
Notes: S.S.F.Research and demonstration project on slow sand filtration - At head of title.