Universal decimal classification 
/ British Standard Institution 
 - London:   British Standard Institution,   1979 
 - 59p. 
<br/><br/> BS 1000[57] : 1979 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Classification Standards 
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.45:57  / H3;L9-;2