Troeh Frederick R Au. <br/><br/>
Soils and soil fertility 
Troeh Frederick R Au.; Thompson Louis M Au. 
 - 6 
 - Iowa  Blackwell Pub.           2005 
 - viii, 489p  cm. 
<br/><br/> Bibliography chapterwise; Glossary P 441-468; Appendix P 437-439 
<br/><br/><label>ISBN: </label>081380955X  3287.3200000000002 
<br/><br/><label>Source: </label> 226, 04/01/2008, Bharatiya Sahitya Bhavana  General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography
<br/><br/><label>Dewey Class. No.: </label>U672(J:1), P5