Lancaster, Frederick Wilfrid. <br/><br/>
The measurement and evaluation of library services 

 - Arlington, Va. :  Information Resources Press,  1977 
 - 395 p.  : gráfs. 
<br/><br/> c.2 en fotocopia 
<br/><br/><label>LCCN: </label>28108 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bibliotecas--Evaluación.
<br/><br/><label>Dewey Class. No.: </label>021  / L3