Obeng, Letitia  A. <br/><br/>
Sanitation planning :    a challenge for the 90s /  
remarks by Let itia A. Obeng and Alain R. Locussol. 
 - [Cotonou :    s.n,    1992]. 
 - [13] p. ;    28 cm. 
<br/><br/>  Presentation to the Union of African Water Suppliers Congress, Coton ou, Benin, February, 3-6, 1992. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Sanitation -- Africa.