Vallentine H R <br/><br/>
Water in the service of man 

 - Harmondsworth  Penguin Books           1967 
 - 224p. Bib p. 220-21  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology
<br/><br/><label>Dewey Class. No.: </label>U22, K7