Ward, R. C. <br/><br/>
Principles of hydrology 

 - London  : McGraw-Hill Publishing  Company,  1967. 
 - 403p.  : ill.  ; 23cm. 
<br/><br/>Includes bibliographies<br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology
<br/><br/><label>LC Class. No.: </label>GB661.W3