Encyclopedia of Libraries, Librarianship, and Information Science, Four Volume Set is the definitive, essential, state-of-the-art reference work in this field. The last 40 years have seen a revolution in the way in which information and knowledge has been created, stored, disseminated, and exploited. Seismic shifts are set to continue, with COVID and climate change being but two of the most significant challenges to human existence and endeavor at the present time. The crucial role of library and information services has been recognized and revitalized during the recent pandemic.