Reference and information services : an introduction / general eds. Richard E. Bopp, Linda C. Smith 

 - Englewood, Colorado :  Libraries Unlimited,  1991 
 - xx, 483 p 
 - Library science text series .
<br/><br/> Monografía 
<br/><br/><label>ISBN: </label>0872877884 (rústica) 0872878759 7 
<br/><br/><label>Subjects--Index Terms: </label>Servicios de Consulta Servicios de Consulta (Bibliotecas) 
<br/><br/><label>LC Class. No.: </label>Z711/R41