Tisdale, Samuel L.  <br/><br/>
Soil fertility and fertilizers /  
Samuel L. Tisdale and Werner L. Nelson. 
 - New York :   Macmillan,  c 1956. 
 - xxii, 430 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>346  346 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil Fertility--Fertilizers.
<br/><br/><label>Dewey Class. No.: </label>631.8 / J524s