Schwab, Glenn O. Frevert, Richard K. Barnes, Kenneth K. <br/><br/>
Manual od soil and water conservation engineering 

 - Iowa  WM. C. Brown    1952 
 - x, 246 
<br/><br/><label>Subjects--Topical Terms: </label><br/>  Conservation of rural resources<br/>  Soils<br/>  Water<br/>  Engineering
<br/><br/><label>Dewey Class. No.: </label>631.4  / Sc398m