Thanh, N. C. Hettiaratchi, J. P. A. <br/><br/>
Surface water filtration for rural areas :  Guidelines for design, construction, and maintenance / 
[by] N. C. Thanh, J. P. A. Hettiaratchi 
 - Bangkok  Environmental Sanitation Information Center  1990 
 - 93 p. 
<br/><br/> Includes appendix. 
<br/><br/><label>ISBN: </label>9748200043 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water<br/>Ground water
<br/><br/><label>Dewey Class. No.: </label>628.1  / THA