Summary report. 

 - Geneva :  International Bureau of Education,  1967. 
 - International Bureau of Education. Publication ;  no. 306 .
 - Publication (International Bureau of Education) ;  no. 306. .
<br/><br/> Sponsored by Unesco and the International Bureau of Education. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education -- Congresses.--Education -- Congresses.