Ward, R. C.  <br/><br/>
Principles of hydrology /  
R. C. Ward. 
 - 2nd ed. 
 - London :   McGraw-Hill,   c1975. 
 - xvi, 367 p. :   il. 
<br/><br/><label>ISBN: </label>0070840563 
<br/><br/><label>LCCN: </label>74032444  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hidrologia.
<br/><br/><label>Dewey Class. No.: </label>551.4