Tisdale, S.L. <br/><br/>
Soil Fertility and Fertilizers 

 - 4th ed.  
 - New York  MacMillan Publishing Company  1975 
 - Xiv; 754p.  illustrations 
<br/><br/><label>ISBN: </label>0024208302 
<br/><br/><label>LC Class. No.: </label>S633  / .T52