Serpell, Robert <br/><br/>
Cross-cultural differences in the difficulty of copying orientation :    a response organization hypothesis /  
Robert Serpell. 
 - Lusaka :    Human Development Research unit,    1969. 
 - 40 p. :    ill. 
 - H. D. R. U. reports;    12 .
<br/><br/><label>Subjects--Topical Terms: </label><br/> Culture diffusion<br/> Psychology