Worthen, Edmund L. <br/><br/>
Farm soils :  their fertilization and management / 
by Edmund L.  Worthen and Samuel R. Aldrich. 
 - 5th ed. 
 - New York :  John Wiley & Sons,  1956. 
 - 439 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils.
<br/><br/><label>LC Class. No.: </label>S591  / .W67 1956