CANEDO ANDALIA, Rubén. Some theoretical approaches to high value-added, tailor-made and knowledge-oriented services. . []. , 14, 1, pp. 0-0. ISSN 1024-9435.

Library, documentary and information services are approached from a theoretical and historic perspective, considering their essence, evolution and present state. The high value-added, tailor-made, and knowledge-oriented information services are defined. The supply of information services with these characteristics is a basic precedent to obtain a high impact in a users' community and in society in general. Today, diverse generations of services directed to the satisfaction of the various needs of information of the users coexist in a library.

: Information services; high value-added information services; tailor-made information services; knowledge-oriented information services.