Universal decimal classification 
/ British Standards Institution 
 - London:   British Standards Institution,   1955 
 - 36p. 
 - FID  179 .
<br/><br/> 622, Mining and mineral dressing<br/>679, Military and naval engineering, ordnance. Arms production [025.45 : /622/623] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.45:622/623  / J5