Water and waste engineering in Africa  6th WEDCV conference 24 28 March 1980 at Ahmadu Bello University, Zaria, Nigeria  proceedings 
edited by John Pickford and Susan Ball 
 - Loughborough  Department of Civil Engineering, University of Technology  1981 
 - 203 p.  ill., maps  30cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply--Africa<br/>Sewage disposal--Africa
<br/><br/><label>Dewey Class. No.: </label>628.1  / 096