Perreault, J.M. <br/><br/>
Towards a theory for UDC: essays aimed at structural understanding and operation development 

 - London  Clive bingley  1969 
 - 241p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Universal decimal - Study and teaching<br/>Classification - Books<br/>Library education<br/>Library science
<br/><br/><label>Dewey Class. No.: </label>025.432 PER-;