Establishment of an agricultural research programme on an ecological basis in Africa, Sudanian zone :   follow up action programme 1970-19 72 /  
a report based on the work of Charles L. Pierson. 
 - Rome :   FAO,   1972. 
 - iv , 23 p. ;    28 cm. 
<br/><br/>  FAO/SWE/TF 78 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture --Research --Sudan.----