International guide to educational documentation 

 - 2nd ed. 
 - Paris    : UNESCO,  1971. 
 - 575p.    ; 27cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education,<br/> Book
<br/><br/><label>LC Class. No.: </label>REF AS4.U8A15