Statistical study of wastage at school 

 - Paris  Unesco         1972 
<br/><br/><label>Standard No.: </label>235,045 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>EDUCATION
<br/><br/><label>Dewey Class. No.: </label>Ts1:N6, L2