International drinking water supply and sanitation decade    Review of national Baseline data    

 - Geneva  World Health Organization          1980 
 - xxii,397p.  cm. 
 -  1980 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>D85.1s, M0/UN