Hansen, J.A. <br/><br/>
Appraisal of four alternative excreta removal systems for urban areas in developing countries 
J.A. Hansen, H.H. Therkelsen and P. Buch-Hansen 
 - [Oxford]  Pergamon Press  1978 
 - p.235-249 
 - Progress in water technology  v.11 nos. 1/2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage disposal--Developing countries