I 027.4
Cos
C
 Costs of public library service.  1956-
   Chicago, American Library Association
   v. 24 cm. 

   Preparado por varios Comités de la Public Library Association (1956 of the Public Libraries Division of the American Library Association)
  Vols. 1956-     publicado como un suplemento de Public Library service a guide to evaluation, with minimum standards.