Stilwell, J. A. <br/><br/>
Workbook to accompany the fifth edition of an introduction to positive economics / 
 Introduction to positive economics 
J.A. Stilwell, Richard G. Lipsey and Rosemary Clarke. 
 - Weidenfeld :  English Language Book Society,  [1979] 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics -- Study and teaching -- Africa--Economics -- Study and teaching -- Africa--Economics -- Study and teaching -- Africa