Handbook on the international exchange of publications / 
Unesco ; edited by Frans Vanwijngaerden. 
 - 4th ed. 
 - Paris :  Unesco,  1978 
 - 165 p. ;  21 cm. 
<br/><br/><label>ISBN: </label>9231014668 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Exchanges, Literary and Scientific.