Jenny Hans <br/><br/>
Factors of soil formation    A system of quantitati    
Jenny Hans 
 -  1941 
 - Agricultural Sciences .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:1, H1