Directory of educational documentation and information services 
/ The UNESCO Press, Paris 1975 
 - Paris:   The Unesco Press,   1975 
 - 60p. 
<br/><br/><label>ISBN: </label>9230013277 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Documentation 
<br/><br/><label>Universal Decimal Class. No.: </label>D 02+002:659.2(058.7)  / L5