Universal decimal classification international 

 - 4th 
 - London  British standards Institutions       1971 
 - 24p.  cm. 
<br/><br/> Contents 681.6 Graphic rproduction mechines and equipment 
<br/><br/><label>Standard No.: </label>6,587 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBRARY SCIENCE
<br/><br/><label>Dewey Class. No.: </label>2:51M96, qL110-;13-;14