Tisdale , Samuel , L <br/><br/>
Soil Fertility and Fertilizers 

 - New York  Macmillan Company  1956 
 - 430 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil Fertility
<br/><br/><label>Dewey Class. No.: </label>631.4  / T52S