A Guide to the operation of the agreement for facilitating the international circulation of visual and auditory materials of an educational, scientific, and cultural character :  Beirut agreement adopted by the General Conference of Unesco at Beirut, 1948 

 - 2nd ed. 
 - Paris :  UNESCO,  1954 
 - 31 p. ;  20.5 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual library service<br/>Audio-visual materials--Circulation<br/>International Librarianship
<br/><br/><label>Dewey Class. No.: </label>341.24