Widtsoe, A. <br/><br/>
The principles of Irrigation Practice 

 - Macmillan Company  London  1914 
 - 496p.  ill. 
<br/><br/><label>Nat. Bib. No.: </label>1664 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.7  / BAI