Palmer, Robert G. <br/><br/>
Introductory soil science  : laboratory manual 

 - 2 ed. 
 - Ames :  Iowa State University,  1977 
 - 136 p.  : ilus. ; gráfs. 
<br/><br/><label>LCCN: </label>36198 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Manuales de laboratorio.
<br/><br/><label>Dewey Class. No.: </label>631.4072  / P3 1977