Sayers, William Charles Berwick <br/><br/>
Canons of classification applied to "the subject" "the expansive" "the decimal" and "the library of congress" classifications 

 - London :  Grafton & company,  1915 
 - 173 
<br/><br/> Monografía 
<br/><br/><label>LC Class. No.: </label>Z696/A4S39