Bessell, J. E. <br/><br/>
Labour requirements for crops and livestock. 

 - Sutton Bonington, Leisc. : Lusaka :  Sutton Bonington, Leisc. : Lusaka :  University of Nottingham, Dept. of Agriculture & Horticulture, School of Agriculture ; University of Zambia,  University of Nottingham, Dept. of Agriculture & Horticulture, School of Agriculture ; University of Zambia,  1971. 
 - UNIZALPI report ;  no. 4 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture -- Zambia -- Labor productivity.--Agriculture -- Zambia -- Labor productivity.--Agriculture -- Zambia -- Labor productivity.