The international drinkng water supply and sanitation decade directo ry/    
World water 
 - 2nd ed. 
 - Whitstable :   World water,   1984 
 - 4407  p.:    photos, tables, graphs ;    30 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--------<br/>Water- supply--------