Israelsen, Orson W. <br/><br/>
Irrigation principles and practices 
Orson W. Israelsen, Vaughn E. Hansen 
 - 3ª ed 
 - New York  John Wiley & Sons  1962 
 - 447 p.  il. n.  24 cm 
<br/><br/><label>ISBN: </label>0471429996 
<br/><br/><label>Subjects--Index Terms: </label>Riego