Bookshelf: A Biomedical Database of Books and Documents.

Bookshelf is a database maintained by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine that contains freely accessible online biomedical documents, including systematic reviews, technical reports, textbooks, and reference books. The database allows users to browse and search across all content and within individual books, and it is linked to other NCBI content. This article provides an overview of Bookshelf and demonstrates its usage in a sample search. The resources available in Bookshelf are useful for students, researchers, healthcare professionals, and librarians.