Mangani, Laneny <br/><br/>
The academic perfomance of learners who have retained a grade for another extra year in mathematics, science and english language / 
Laneny Mangani  
 - Lusaka:  The University of Zambia,  2017. 
 - xv, 95 pages:  illustrations. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary).<br/>English language--Study and teaching (Secondary)<br/>Science--Study and teaching (Elementary)