The worth of water  technical briefs on health, water and sanitation 

 - London  IT  1998 
 - vii,132p. 
<br/><br/><label>ISBN: </label>1853390690 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENGINEERING - PUBLIC HEALTH
<br/><br/><label>Universal Decimal Class. No.: </label>628  / W56