Ngugi, D. <br/><br/>
East African Agriculture : 
A textbook for secondary schools/ 
 - 3rd ed. 
 - London  Macmillan  1990 
 - vi, 330p. 
<br/><br/><label>ISBN: </label>978-0333488645 
<br/><br/><label>LC Class. No.: </label>S517  / .N48 1990