General conference twentieth session 1978 :  proceedings. 

 - Paris :   Unesco,   c 1980. 
 - Vols. :  ill. ;  29 cm. 
<br/><br/>V. 3-- ; 
<br/><br/>11  11 
<br/><br/><br/>English, French, Spanish, Russian, Arabic 
<br/><br/><label>ISBN: </label>92-3-001776-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General Conference-- Unesco.
<br/><br/><label>Dewey Class. No.: </label>060 / U3r