Hebblethwaite, M. J. <br/><br/>
Vegetable production costs. 

 - [Lusaka,  1969] 
<br/><br/> Photocopy.  Photocopy. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture -- Zambia -- Costs.--Agriculture -- Zambia -- Costs.--Agriculture -- Zambia -- Costs.<br/>Vegetables -- Costs.--Vegetables -- Costs.