Shores, Louis. <br/><br/>
Introduction  : the practice of reference 

<br/><br/> Sobretiro de: Shores, Louis. basic reference sources: an introduction to materias and methods. Chicago : ALA, 1954 pp.1-22 
<br/><br/><label>LCCN: </label>56254 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Servicio de consulta (Bibliotecas)