Adaptive research planning team: Northern Province. 

 - Kasama :  Misamfu Regional Research St.,  1967. 
<br/><br/> This dicusses the problems farmers face in determining the maturity of the variaties. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture.<br/>Zambia -- Agricultural research.--Zambia -- Agricultural research.