Johnson, Leon J. <br/><br/>
Introductory soil science  : a study guide and laboratory manual 

 - New York :  Macmillan,  1979 
 - 289 p 
<br/><br/><label>LCCN: </label>17299 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos.<br/>Suelos--Manuales de laboratorio.
<br/><br/><label>Dewey Class. No.: </label>631.4  / J6