Perreault, J M. <br/><br/>
Towards a theory for UDC  : essays aimed at structural understanding and operational improvement 
J M.Perreault 
 - London:  Clive Bingley,  1969. 
 - 241p. 
<br/><br/><label>ISBN: </label>0851570798 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classification, Universal-Decimal
<br/><br/><label>Dewey Class. No.: </label>025.432  / PET