Commonwealth Bureau of Soils <br/><br/>
Bibliography on Cowpea and Some Minor Tropical Legumes : Nutrition N Fixation Soils ( 1967-1957) 

 -  Commonwealth Bureau of Soils, England 
 - pp 26;   26*21 
<br/><br/><label>Dewey Class. No.: </label>J388:1a/N67/B08236