ISO 531998(E) 

 -   ISO   ½1998 
<br/><br/><label>Source: </label>STAS-110667 
<br/><br/><label>Index Terms--Genre/Form: </label><br/> standard ISO
<br/><br/><label>Universal Decimal Class. No.: </label>006.83621.833;  621.833(083.74)