Troeh R. Frederick <br/><br/>
Soils and soil fertility / 
Frederick R. Troeh and Louis M. Thompson 
 - fifth edition 
 - New York :  Oxford University press ,  1993. 
 - vi,462 pages ;  illus :  24 cm. 
<br/><br/> includes an index. 
<br/><br/><label>ISBN: </label>0195083288 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil fertility<br/>Soils
<br/><br/><label>LC Class. No.: </label>S 591 Tro