Donahue, Roy Luther,  1908- <br/><br/>
Our soils and their management  increasing production through soil and water conservation 
by Roy L. Donahue. 
 - [3 rd ed.] 
 - Danville Ill   Interstate  [1970] 
 - [9], 683 p.  ill.  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil management.<br/>Soil science.
<br/><br/><label>LC Class. No.: </label>S591  / .D65 1970 
<br/><br/><label>Dewey Class. No.: </label>631.4 DON 1970