Berwick Sayers, W. C. <br/><br/>
A manual of classification for librarians & bibliographers /  
by W.C. Berwick Sayers. 
 - London :   Grafton & Co.,   1926. 
 - 346 p. ;   22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clasificación bibliográfica.