NA <br/><br/>
Planning the management, operation, and maintenance of irrigation and drainage systems / 

 -  Washington ; The World Book,  c 1998. 
 - xi, 120p, ;  NA  24 cm. 
<br/><br/><label>ISBN: </label>0821340670 
<br/><br/><label>LC Class. No.: </label>0 
<br/><br/><label>Dewey Class. No.: </label>627.52068