Otto, N. E. <br/><br/>
Aquatic pest on irrigation systems 

 - 2 ed. 
 - Denver, Col. :  Water and Power Resources Service,  1980 
 - 90 p.  : ilus. 
<br/><br/><label>LCCN: </label>37393 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Irrigación.<br/>Plantas acuáticas.
<br/><br/><label>Dewey Class. No.: </label>581.92  / O8 1980