Documentos audiovisuales y prácticas laborales en las bibliotecas populares de La Plata. Un estudio de caso

The treatment received by audiovisual documents is described and analyzed in relation with the policies of collection development, technical processes and services, in a sample of popular libraries located in La Plata City. The existence of a common picture in the great majority of these libraries is corroborated. The characteristics of two of the libraries are noted as exceptions to the general situation