Trade Barriers to knowledge: A Manual of Regulation Affecting Educational, Scientific and Cultural Materials 

 - France:   Unesco,  1955. 
 - 361p.;  24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International Commerce<br/>Commerce (Trade)
<br/><br/><label>Dewey Class. No.: </label>382  / TRA