McWilliam, A. S. <br/><br/>
Soil fertility 

 - 7 ed. 
 - London :  Evans,  1959 
 - 47 p.  : ilus 
 - Young farmers'club booklet  ; 12 .
 - Young farmers'club booklet  ; 12 .
<br/><br/><label>LCCN: </label>29269 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Suelos--Fertilidad.
<br/><br/><label>Dewey Class. No.: </label>630.82  / Y68 v.12