Water :  where water comes from 

 - Rome :  FAO of the United Nations,  1981 
 - 31 p. : ill. 
 - Better farming series ; 28 FAO economic and social development series ; no/28 .
<br/><br/><label>ISBN: </label>9251010862 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water.