Sayers, William Charles Berwick <br/><br/>
An introduction to library classification :  theoritical, historical and practical with readings, exercises and examination papers 

 - 9. ed 
 - 320 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classificação<br/>Livros<br/>Bibliotecas
<br/><br/><label>Universal Decimal Class. No.: </label>025.4  / S274i