Proceedings 

 - St. Joseph, Mich. :  American Society of Agricultural Engineers,  (1972?) 
 - 56 p.  : ilus. 
<br/><br/><label>LCCN: </label>30686 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drenaje.<br/>Drenaje--Congresos.
<br/><br/><label>Dewey Class. No.: </label>631.6  / N3