Fifth international congress and symposia   
/UNESCO  
 - Cambridge:   UNESCO,   1960  
 - 167p.  
 - International Union of Crystallography  .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Symposia
<br/><br/><label>Subjects--Index Terms: </label>Communications   
<br/><br/><label>Universal Decimal Class. No.: </label>548(082.2)  / K0