This is the 68th volume (supplement 31) in a series which examines library and information science.

Effectively the eighth edition of Aslib's flagship Handbook of Special Librarianship and Information Work, the definitive reference source on information theory, practice, and procedure since 1957.

This volume contains the proceedings of a special conference held in Florence, August 2009. The theoretical and methodological aspects of rethinking semantic access to information and knowledge are explored. Innovative projects deployed to cope with the challenges of the future are presented and discussed. This book offers a unique opportunity for librarians and other information professionals to get acquainted with the state of the art in subject indexing.