Olivier, Sydney Haldane <br/><br/>
The  improvement of Negro agriculture. 

 - London  1929 
 - p.396-419  25cm 
<br/><br/> Extract from Journal of the Royal Society Arts, vol. 78, no.3980, Mar. 1929. 
<br/><br/><label>Dewey Class. No.: </label>Pam 630  / Ja Oli