Sergean, R <br/><br/>
British library research & development reports 
/ The British Library Board, 1977 
 - London:   The British Library Board,   1977 
 - 62p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Report 
<br/><br/><label>Universal Decimal Class. No.: </label>D 02+002/.007  / L7.1