Serpell, Robert. <br/><br/>
Discrimination of orientation by Zambian children / 
by Robert Serpell. 
 - [Lusaka] :  Human Development Research Unit, University of Zambia,  1968. 
 - H.D.R.U. reports ;  no. 7 .
<br/><br/> Cover title. 
<br/><br/>Bibliography: leaves [13]-[14]. 
<br/><br/><label>LCCN: </label>76983530 //r85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Form perception.<br/>Orientation (Psychology)<br/>Cognition in children.<br/>Children -- Zambia.--Children -- Zambia.
<br/><br/><label>LC Class. No.: </label>BF723.P36  / S44 
<br/><br/><label>Dewey Class. No.: </label>155.4/5796894