Wastage in primary and general secondary education :  a statistica l study of trends and patterns in repetition and drop-out. 

 - Paris :  UNESCO,  1980. 
 - vii, 157 p. :  ill. ;  30 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Statistics.