Soil erosion, prediction and control  : proceedings of a national conference... 

 - Ankeny, Iowa :  The society,  1977 
 - 393 p.  ;gráfs. 
 - Special publication  ; 21 .
 - Special publication  ; 21 .
<br/><br/><label>LCCN: </label>56848 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Erosión--Prevención y control.
<br/><br/><label>Dewey Class. No.: </label>631.455  / S6