UDC schedules   68/681.3 : finished articles in general.Precision mechanisms. Horology. Instrumentation. Data Processing equipment 

 - London  British Standards Institution  1982 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Udc
<br/><br/><label>Universal Decimal Class. No.: </label>025.45  / BSI