Cedergren, Harry R. <br/><br/>
Seepage, drainage and flow nets 

 - 3rd ed. 
 -  John Wiley & Sons  1989 
<br/><br/><label>ISBN: </label>9780471180531 
<br/><br/><label>Dewey Class. No.: </label>624.15136  / N89 CEB