The International Drinking Water Supply and Sanitation Decade 1981-1 990. 

 - Geneva :  CWS, Division of Environmental Health, World HEalth Orga nization,  1990. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water- supply<br/>Sanitation
<br/><br/><label>National Library of Medicine Call No.: </label>WA 675  / In8d 1992