Serpell, Robert; Deregowski, Ian B. <br/><br/>
Frames of reference for copying orientation: a cross - cultural study. 

 - Lusaka :  University of Zambia,  1971. 
<br/><br/> HDRU Reports No. 19. 
<br/><br/> Focuses on the orientation of shapes, as a dimension of visual perception. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Visual Arts.<br/>Learning -- Zambia.--Learning -- Zambia.