National Center For Biotechnology Information - NCBI Bookshelf

The NCBI Bookshelf is a collection of freely available, downloadable, on-line versions of selected biomedical books. As of September 2012, the Bookshelf had over 1,300 titles covering a wide range of topics including molecular biology, biochemistry, cell biology, genetics, microbiology, disease states from a molecular and cellular point of view, research methods, and virology. Some of the books are online versions of previously published books, while others, such as Coffee Break, are written and edited by NCBI staff. The Bookshelf is a complement to the Entrez PubMed repository of peer-reviewed publication abstracts in that Bookshelf contents provide established perspectives on evolving areas of study and a context in which many disparate individual pieces of reported research can be organized.