Shores, Louis. <br/><br/>
The subjet approach  : librarianship 

<br/><br/> Sobretiro de: Basic reference sources : an introduction to materials and methods. -- Chicago : ALA, 1954. pp. 236-248 
<br/><br/><label>LCCN: </label>56256 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Servicio de consulta (Bibliotecas)